Preheat oven to 150 C fan/170 C/325 F.: The oven warmth carries a subtle earthy scent, and coming to the correct temperature ensures the flans bake evenly and set gently. A fan assisted 150 C, or standard 170 C, creates stable heat so the custard does not curdle. If the oven is cooler, the flans may remain unset in the middle, and if it is hotter they can puff then collapse. Avoid opening the door frequently, because temperature swings affect the gentle rise.
Quickly boil both carrots and peas in two separate pots of lightly salted boiling water.: You will notice a sweet vegetal steam and faint sizzle when the vegetables hit the water. Rapid boiling for a short time cooks them through while preserving color. The separate pots prevent flavor transfer, keeping the carrot layer bright orange and the peas vivid green. A common mistake is overboiling, which results in dull color and soggy texture, so test often with a fork for tenderness.
Drain under cool running water, then pat dry.: Cooling the vegetables immediately stops the cooking, locking in color and texture, and the cool rinse removes surface starch and heat. Patting them dry with a clean towel or paper will prevent excess water from thinning the mixtures. If you skip drying, the additional moisture can make the flans loose and prolong baking time.
In a food processor blend cooked carrots until smooth, then add in half the ricotta and thyme, 1 tablespoon parmesan cheese, 1 tablespoon almond flour and 1 beaten egg. Season with salt and pepper and transfer into a bowl.: As you blend, you will hear a smooth whir and see the carrots turn satin like. Adding half the ricotta cheese and a portion of the other ingredients builds a cohesive, silky carrot mixture. The aroma becomes slightly dairy sweet and herbaceous. If the mixture seems grainy, scrape down and pulse again to reach a uniform texture. Underblending leaves lumps, while overblending can warm the mix too much.
Clean the food processor and fold the cooked peas in, then add the remaining ricotta, almond flour, parmesan, thyme and beaten egg. Season to taste.: The salt releases the natural sweetness of the carrots , and freshly ground pepper adds a subtle bite. Tasting at this stage ensures the final flan will be seasoned properly, since baking concentrates flavors. A common oversight is skimping on salt which produces flat tasting flans, so taste and adjust carefully.
Spray with oil a non-stick muffin pan and fill the molds by half with the carrots mixture. Fill to the top with the pea mixture.: Folding the peas in after a quick reblend keeps the green layer distinct and smooth. The sound is a gentle pulse and the texture becomes creamy emerald when fully combined. Stirring gently preserves air and avoids overworking the mixture. Overmixing can deflate the airy structure provided by the beaten eggs , so fold until uniform but light.
Arrange the muffin-tin on a large roasting tray filled with hot water by 2/3, to make the bain-marie.: At this point the combined pea mixture should sing with seasoning; adjust salt and pepper to complement the cheese. Small corrections here have a big effect on the finished flan, because the flavors concentrate while baking. Common mistakes are either underseasoning or oversalting, so add incrementally and taste a small spoonful.
Bake in the oven for about 30 mins or until set. Allow to cool slightly before removing the flans from the tins.: Brushing or spraying the pan releases a faint olive oil aroma and creates a thin barrier so flans slide out cleanly. Filling the molds halfway with the carrot layer provides a stable base and creates an attractive two tone effect. Filling unevenly will produce inconsistent baking, so use a spoon or small scoop for uniform portions.
Turn the flans upside down on a serving plate and serve. Enjoy!: The pea layer should have a glossy emerald sheen as you spoon it over the carrot base. Filling to the top ensures a smooth finish once inverted, and the contrast between colors becomes pronounced. Tap the pan gently to settle the mixtures and release any trapped air. A common pitfall is leaving large air pockets, which can create holes in the finished flans, so press lightly to even the surface.
Arrange the muffin tin on a large roasting tray filled with hot water by 2/3 to make the bain marie: Setting the tray into a shallow water bath produces an enveloping steam and a gentle, even bake, which is essential for a custard like set. The water should come about two thirds up the sides of the muffin tin, and you will see soft ripples on the surface as it heats. If the water is cold, the flans will bake unevenly; if it is boiling vigorously, the edges may cook too quickly. Be careful when transferring to avoid splashing water into the molds.
Bake in the oven for about 30 mins or until set: During baking you will notice a faint eggy aroma and the tops will firm without strong browning. The center should be just set, with a slight wobble that indicates custard doneness. Insert gently with a finger to feel for a soft but not liquid center. Underbaking leaves a runny interior, while overbaking will make them dry and rubbery, so check toward the end of the time and rely on visual cues.
Allow to cool slightly before removing the flans from the tins: Cooling lets the flans finish setting and reduces the risk of breakage when unmolding. A gentle steam will rise and the texture will go from fragile wobble to a firmer custard. If you try to unmold while too hot, they can fall apart, so patience at this stage pays off.
Turn the flans upside down on a serving plate and serve: As you invert them, the surfaces should be smooth and glossy, and the aroma will be herbaceous and creamy. Serving slightly warm emphasizes the texture and scent, but room temperature also works well. A common serving mistake is handling too roughly; use a small spatula to nudge them out cleanly for an elegant presentation.
