Christmas Breakfast Casserole

Christmas Breakfast Casserole is the kind of recipe I make when the house wakes up slower than usual and there is the delicious smell of something baking through every room. I remember the first time I cooked this for a family morning, the way the kitchen filled with the scent of browned breakfast sausage and melting cheddar cheese, and how everyone gathered around before the plates even landed on the table. It felt like a warm, edible hug.

Some mornings call for complicated plans, and some mornings need comfort and ease. This casserole lives in the latter category for me, because it turns simple pantry items into a crowd pleasing dish with minimal fuss. I love that the base is soft, slightly chewy biscuits pressed into the pan, holding pockets of savory sausage and bright, crisp bits of bell pepper and scallions. When the casserole comes out of the oven, the top is golden and the edges are slightly caramelized, with the center puffed and custardy from the eggs and milk.

Over the years I have learned to time the oven so we can sip coffee while it bakes, and to let it rest a few minutes so the slices hold together neatly. There is a comforting predictability to this dish, and yet it always feels a little festive, which is why it often shows up at holiday mornings and weekend brunches. I’ve served it straight from the baking dish, bringing it to the table with a rustic linen and a wooden spatula. Kids and adults both reach for seconds, and I like that it saves me from a morning of last minute scrambling.

Christmas Breakfast Casserole Shopping List

These ingredients balance savory, creamy, and fresh elements so every bite is satisfying. The biscuits form a soft base, the breakfast sausage gives a hearty savory backbone, while the eggs and milk create a custardy binder. The cheddar cheese melts into pockets of richness and the bell pepper and scallions add color and brightness. A touch of salt and black pepper rounds everything out.

• 1 pound breakfast sausage: Brown and crumble to develop savory flavor and provide a meaty base for the casserole; drain excess fat before assembling to prevent sogginess. Season while cooking to build a well-rounded savory profile that complements eggs and cheese.
• 1 can biscuits 16.3 ounces: Layer and tear apart to create a soft, bready base that soaks up egg mixture and sausage juices; arrange pieces evenly in the baking dish for consistent texture. Use the canned biscuits for convenience and to give a tender, slightly flaky bite throughout the casserole.
• 1 red or orange bell pepper seeded and diced: Seed and dice to add sweet, crisp bursts of flavor and bright color to the dish; cook briefly with sausage or scatter raw before baking for a fresher crunch. Choose red or orange peppers for their mild sweetness, which balances the savory elements.
• 4 scallions sliced: Slice thinly to contribute a mild oniony note and tender green flecks that enhance overall flavor and appearance; sprinkle evenly so each bite contains some of the aromatic. Add near the top if you prefer a sharper bite, or mix in for a softened, cooked scallion flavor.
• 2 cups shredded cheddar cheese: Shred finely to create melty, cohesive pockets of savory richness that bind the casserole and form a golden top when baked. Use cheddar for its sharp, creamy character that pairs well with sausage and eggs.
• 8 large eggs: Whisk thoroughly to provide structure, lift, and custardy texture when combined with milk and baked; incorporate evenly to ensure uniform setting throughout the casserole. Beat until yolks and whites are fully combined for the best results.
• 1/2 cup milk: Combine with eggs to create a smooth, creamy custard that softens the biscuits and melds flavors; measure accurately to avoid an overly wet or dry casserole. Use milk for added richness and a tender bake.
• 1/4 teaspoon fine sea salt: Measure precisely to control seasoning and enhance all other flavors without overpowering the dish; dissolve into the egg-milk mixture for even distribution. Adjust slightly based on your saltiness of other components like sausage and cheese.
• Black pepper: Season generously to taste to add subtle heat and balance flavors; grind fresh over the assembled casserole before baking or at the table for a brighter finish. Use black pepper to lift the richness of eggs, sausage, and cheese.

Cooking Method for Christmas Breakfast Casserole

This casserole is forgiving and straightforward, and once you understand the cues you can bake it with confidence. Follow the steps in order for even layers, then watch for visual and tactile signs in the oven that convey doneness.

1. Preheat oven to 350°F. Grease (1) 9×13-inch baking dish. Set aside.: When the oven reaches an even temperature, you will notice a consistent ambient warmth and a gentle heat haze near the racks. I preheat thoroughly so the casserole begins to set immediately, giving a tender but structured center rather than a slow, uneven rise. If you skip full preheating the edges might overcook before the center firms. A common mistake is opening the oven door frequently, which drops temperature and prolongs baking.
2. Cook the breakfast sausage in a skillet over medium-high heat until cooked through and browned. If needed and desired, drain the grease. Set aside.: The greased surface prevents sticking and encourages even browning along the edges. Brush a thin, even layer of oil or butter in every corner and across the base so the biscuit bottom releases cleanly. If the dish is not greased well, the base can cling and tear when serving. Avoid excess grease pooling, which leads to soggy spots.
3. Arrange the biscuits in the bottom of the greased baking dish. Use your hands to press the biscuits flat to create an even layer across the bottom of the pan.: As the breakfast sausage hits the hot skillet you will hear a steady sizzle and smell savory, toasty notes. Cook until the meat loses pink, and you see golden browned bits that add deep flavor. Draining excess grease concentrates the texture and prevents a greasy bake. Underbrowned sausage will deliver less flavor, while overcooking until very dry can make the texture crumbly.
4. Evenly top the biscuits with the cooked sausage, diced bell pepper, and sliced scallions. Top evenly with the shredded cheese.: Pressing the biscuits flat creates a uniform base that soaks up custard and browns nicely. Use a gentle, even pressure so the layer is level across the pan, because an uneven base causes pockets of underbaked dough. If the biscuits remain too thick they may not cook through; too thin and they become brittle.
5. In a bowl or large measuring cup, whisk together the eggs, milk, salt, and several grinds of black pepper. Evenly pour over the other ingredients in the baking dish.: Layering distributes flavors and textures, so aim for an even scatter so each slice has balanced elements. The diced bell pepper should look bright, not wilted, and the scallions remain visible as green threads. Crowding one area with too much filling leads to dense spots that alter baking time.
6. Bake for 40-50 minutes, or until the center is puffed and the eggs are set.: As the cheddar cheese melts it will create adhesive pockets that hold layers together and brown on top. Sprinkle uniformly so you get consistent melting and little golden bubbles across the surface. Dumping cheese in one heap results in uneven melting and texture differences.
7. Whisk together the eggs milk salt and black pepper: The whisking should produce an even, pale yellow liquid with a few gentle air bubbles. This uniformity ensures the custard sets consistently and avoids streaks of dense white. If you under whisk, the texture can be patchy; over whisking will incorporate too much air, which can cause excessive puffing and collapse.
8. Evenly pour over the other ingredients: Pour slowly and move the dish gently if needed so the egg mixture distributes into crevices and around fillings. You want the custard to seep into the biscuit base and fill voids without washing away toppings. Pouring too quickly can displace toppings and create uneven pockets.
9. Bake for 40 to 50 minutes: As the casserole bakes you will notice the center rising slightly and the edges turning golden brown. When the center looks set and no longer jiggles, and a knife inserted near the center comes out mostly clean, it is done. Baking too long will dry out the custard and make the texture rubbery; too short and the center will be runny. Keep an eye on the oven during the last stretch so the top reaches a pleasant golden color without burning.

Ways to Customize

This casserole is flexible, and small swaps can tune it to your crowd or pantry. Below are practical ways I customize it while keeping the heart of the recipe intact.

• Adjust cheese amount Increase or decrease the cheddar cheese to control richness, I sometimes use a bit less for a lighter finish or more for extra gooeyness.
• Make it ahead Assemble the casserole, cover, and refrigerate overnight; bring to room temperature while the oven preheats for a stress free morning.
• Control salt Taste the cooked breakfast sausage before adding extra salt, because sausage varieties vary widely in sodium and you want to avoid over seasoning the custard.
• Even baking If your oven runs hot in spots rotate the dish midway through baking for the most even browning and set.
• Texture tweaks For a firmer slice bake a few minutes longer, for a creamier center shorten the baking time slightly and let it rest longer out of the oven.

What to Serve With Christmas Breakfast Casserole

This casserole pairs well with simple sides and beverages that complement its savory richness. I like to offer one fresh element and one warm accompaniment so the meal feels balanced. These pairings also work for holiday mornings, weekend brunches, or casual gatherings.

• Fresh fruit platter A bowl of sliced oranges and berries brightens the plate and contrasts the savory custard with natural sweetness and acidity.
• Simple green salad Light greens tossed with a lemon vinaigrette cleanse the palate and add a crisp texture next to the warm, soft casserole.
• Toast or crusty bread Slices of toasted bread absorb juices and offer a crunchy bite for those who enjoy contrasting textures.
• Yogurt or light parfaits Yogurt topped with granola and fruit provides a cool, tangy option that complements the warm, cheesy casserole.
• Beverage choices Coffee, tea, or sparkling juice all work; offer a warm and a chilled drink to suit guest preferences.
• Occasions Serve this for holiday mornings such as Christmas, slow weekend brunches, or anytime you need a make ahead crowd pleaser.
• Storage tips Cover leftovers tightly and refrigerate up to three days; reheat in a moderate oven to retain texture rather than the microwave if you want to keep edges crisp.
• Seasonal pairing In winter pair with citrus fruit or warm spiced beverages to enhance the cozy feeling of the meal.

FAQ

Conclusion

This Christmas Breakfast Casserole stands out because it merges simplicity with holiday friendly flavor, delivering a warm, satisfying meal that requires minimal effort. Give it a try on your next festive morning, or whenever you need a dependable, comforting brunch that feeds a crowd. I hope it becomes one of those recipes you reach for when you want to feed family and friends without fuss, and that it brings the same easy pleasure to your table that it has to mine.

Christmas Breakfast Casserole

Christmas Breakfast Casserole is a savory, crowd pleasing bake with browned breakfast sausage, gooey cheddar cheese, and a custardy egg center. Soft biscuits form a tender base while bell pepper and scallions add brightness, making this an easy make ahead brunch staple perfect for holiday mornings and easy weeknight breakfasts.

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Prep Time 20 minutes mins

Cook Time 50 minutes mins

Total Time 1 hour hr 10 minutes mins

Servings: 8 servings

Course: Breakfast

Cuisine: American

Calories: 300

Ingredients Equipment Method Notes

Ingredients

  

• 1 pound breakfast sausage Brown and crumble to develop savory flavor and provide a meaty base for the casserole; drain excess fat before assembling to prevent sogginess. Season while cooking to build a well-rounded savory profile that complements eggs and cheese.
• 1 can biscuits 16.3 ounces Layer and tear apart to create a soft, bready base that soaks up egg mixture and sausage juices; arrange pieces evenly in the baking dish for consistent texture. Use the canned biscuits for convenience and to give a tender, slightly flaky bite throughout the casserole.
• 1 red or orange bell pepper seeded and diced Seed and dice to add sweet, crisp bursts of flavor and bright color to the dish; cook briefly with sausage or scatter raw before baking for a fresher crunch. Choose red or orange peppers for their mild sweetness, which balances the savory elements.
• 4 scallions sliced Slice thinly to contribute a mild oniony note and tender green flecks that enhance overall flavor and appearance; sprinkle evenly so each bite contains some of the aromatic. Add near the top if you prefer a sharper bite, or mix in for a softened, cooked scallion flavor.
• 2 cups shredded cheddar cheese Shred finely to create melty, cohesive pockets of savory richness that bind the casserole and form a golden top when baked. Use cheddar for its sharp, creamy character that pairs well with sausage and eggs.
• 8 large eggs Whisk thoroughly to provide structure, lift, and custardy texture when combined with milk and baked; incorporate evenly to ensure uniform setting throughout the casserole. Beat until yolks and whites are fully combined for the best results.
• 1/2 cup milk Combine with eggs to create a smooth, creamy custard that softens the biscuits and melds flavors; measure accurately to avoid an overly wet or dry casserole. Use milk for added richness and a tender bake.
• 1/4 teaspoon fine sea salt Measure precisely to control seasoning and enhance all other flavors without overpowering the dish; dissolve into the egg-milk mixture for even distribution. Adjust slightly based on your saltiness of other components like sausage and cheese.
• Black pepper Season generously to taste to add subtle heat and balance flavors; grind fresh over the assembled casserole before baking or at the table for a brighter finish. Use black pepper to lift the richness of eggs, sausage, and cheese.

Equipment

• Staub Ceramic 13092 inch Rectangular Baking Dish

Method

 

1. Preheat oven to 350°F. Grease (1) 9×13-inch baking dish. Set aside.: When the oven reaches an even temperature, you will notice a consistent ambient warmth and a gentle heat haze near the racks. I preheat thoroughly so the casserole begins to set immediately, giving a tender but structured center rather than a slow, uneven rise. If you skip full preheating the edges might overcook before the center firms. A common mistake is opening the oven door frequently, which drops temperature and prolongs baking.
2. Cook the breakfast sausage in a skillet over medium-high heat until cooked through and browned. If needed and desired, drain the grease. Set aside.: The greased surface prevents sticking and encourages even browning along the edges. Brush a thin, even layer of oil or butter in every corner and across the base so the biscuit bottom releases cleanly. If the dish is not greased well, the base can cling and tear when serving. Avoid excess grease pooling, which leads to soggy spots.
3. Arrange the biscuits in the bottom of the greased baking dish. Use your hands to press the biscuits flat to create an even layer across the bottom of the pan.: As the breakfast sausage hits the hot skillet you will hear a steady sizzle and smell savory, toasty notes. Cook until the meat loses pink, and you see golden browned bits that add deep flavor. Draining excess grease concentrates the texture and prevents a greasy bake. Underbrowned sausage will deliver less flavor, while overcooking until very dry can make the texture crumbly.
4. Evenly top the biscuits with the cooked sausage, diced bell pepper, and sliced scallions. Top evenly with the shredded cheese.: Pressing the biscuits flat creates a uniform base that soaks up custard and browns nicely. Use a gentle, even pressure so the layer is level across the pan, because an uneven base causes pockets of underbaked dough. If the biscuits remain too thick they may not cook through; too thin and they become brittle.
5. In a bowl or large measuring cup, whisk together the eggs, milk, salt, and several grinds of black pepper. Evenly pour over the other ingredients in the baking dish.: Layering distributes flavors and textures, so aim for an even scatter so each slice has balanced elements. The diced bell pepper should look bright, not wilted, and the scallions remain visible as green threads. Crowding one area with too much filling leads to dense spots that alter baking time.
6. Bake for 40-50 minutes, or until the center is puffed and the eggs are set.: As the cheddar cheese melts it will create adhesive pockets that hold layers together and brown on top. Sprinkle uniformly so you get consistent melting and little golden bubbles across the surface. Dumping cheese in one heap results in uneven melting and texture differences.
7. Whisk together the eggs milk salt and black pepper: The whisking should produce an even, pale yellow liquid with a few gentle air bubbles. This uniformity ensures the custard sets consistently and avoids streaks of dense white. If you under whisk, the texture can be patchy; over whisking will incorporate too much air, which can cause excessive puffing and collapse.
8. Evenly pour over the other ingredients: Pour slowly and move the dish gently if needed so the egg mixture distributes into crevices and around fillings. You want the custard to seep into the biscuit base and fill voids without washing away toppings. Pouring too quickly can displace toppings and create uneven pockets.
9. Bake for 40 to 50 minutes: As the casserole bakes you will notice the center rising slightly and the edges turning golden brown. When the center looks set and no longer jiggles, and a knife inserted near the center comes out mostly clean, it is done. Baking too long will dry out the custard and make the texture rubbery; too short and the center will be runny. Keep an eye on the oven during the last stretch so the top reaches a pleasant golden color without burning.

Notes

• Adjust cheese amount Increase or decrease the cheddar cheese to control richness, I sometimes use a bit less for a lighter finish or more for extra gooeyness.
• Make it ahead Assemble the casserole, cover, and refrigerate overnight; bring to room temperature while the oven preheats for a stress free morning.
• Control salt Taste the cooked breakfast sausage before adding extra salt, because sausage varieties vary widely in sodium and you want to avoid over seasoning the custard.
• Even baking If your oven runs hot in spots rotate the dish midway through baking for the most even browning and set.
• Texture tweaks For a firmer slice bake a few minutes longer, for a creamier center shorten the baking time slightly and let it rest longer out of the oven.

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Meet Hannah Lee

I’m the efficiency expert who refuses to sacrifice quality for convenience. My personal challenge is creating beautiful, delicious food with the fewest dishes possible. I hate clutter and waste, so I streamline every recipe to its essential steps. I photograph our dishes with a minimalist eye because I want you to see that simple can be stunning. If a recipe leaves you exhausted or your kitchen destroyed, I haven’t done my job.