Use food processor or rolling pin to crush cookies (they do not need to be fine). Remove 1 tablespoon for garnish. Add remaining crumbs to a medium bowl and stir in butter until well combined. Set aside.: The aroma of crushed amaretti hitting air is warm and almond forward, and when you pulse them in a food processor or bash them with a rolling pin you want a mix of fine crumbs and small pieces that will provide both base and crunch. As you stir in the melted butter , watch the crumbs glisten and press together slightly when pinched they should hold their form but still fall apart with a gentle nudge. This binding step matters because it creates a stable layer that gives each spoonful a satisfying contrast, and if you skip grinding a portion a little too fine, the texture can become pasty after chilling. A common mistake is overprocessing until they are powder like, which reduces the desired crunch, so stop when you have varied texture.
Divide out 1 1/2 cups sliced strawberries and add to food processor along with 1/4 cup granulated sugar and 1 teaspoon lemon juice. Process until smooth. Set aside.: As you process the reserved strawberries , the kitchen will fill with a fresh, fruity perfume and the puree will take on a glossy sheen. The granulated sugar dissolves and the lemon juice brightens the color and flavor, creating a vibrant pink sauce. This puree acts as a concentrated strawberry note, so its thickness matters it should be pourable yet slightly viscous. If it becomes too thin, it may bleed into the other layers and make them soggy; if too thick, it will stay as a separate blob rather than melding with the other textures. A frequent slip is processing frozen or under ripe berries which yield a duller taste, so use ripe berries for the best result.
Beat cream cheese until very smooth, about 1 minute. Add powdered sugar, vanilla, and lemon juice and beat until smooth, about 2 minutes. Add sour cream and heavy cream and beat on medium high until smooth, thick and fluffy, about 3-5 minutes.: When whipping the cream cheese , begin at room temperature so the blades can cut through cleanly, producing a silky texture. As you incorporate the powdered sugar , vanilla extract , and extra lemon juice , you will notice the mixture lighten and smell creamy with a citrus lift. Folding in the sour cream adds tang and softness, and whipping in the heavy whipping cream turns the mixture airy and cloud like. The sound changes too the mixer shifts from a steady hum to a softer, billowing sound as air is incorporated. This stage is crucial to the final mouthfeel, as under whipped filling can be dense, while over beating can break the emulsion making it runny. Avoid beating at too high speed right away which can create tiny lumps; rather, bring it up gradually to medium high and stop when it forms soft peaks.
Spoon 2 tablespoons cookie crumbs into 6 parfait glasses (or whatever glass/dish works for you). Top with 1/4 cup strawberry slices, 1 tablespoon strawberry puree, 1/4 cup cheesecake; repeat layers. Garnish with reserved cookie crumbs and diced leftover strawberries. You may have strawberry puree leftover which you can drizzle over just before serving.: As you assemble, watch the colors stack: the warm tan crumbs, the ruby strawberry slices, and the pale creamy filling. Use a tablespoon measure to keep portions even so every glass gets the same balance. The layering pattern creates a rhythm of crunch then cream then fruit, and when you press down gently after each crumb layer, it compacts slightly creating a stable foundation. If you pack too hard you risk squeezing out juices, which can soak the crumbs prematurely, so aim for gentle pressure. A common oversight is uneven layering which leaves some glasses dominated by one element; measure if you want consistent presentation.
Chill for 1-2 hours. You can refrigerate longer but just be aware that the cookies will soften more.: Cooling lets the filling set and the flavors meld so the parfaits taste harmonious rather than segmented. The refrigerator will also firm the whipped filling providing cleaner spoonfuls when served. Keep in mind the amaretti crumbs will absorb moisture over time, so if you make them way ahead the texture will trend softer; for maximum crunch, assemble just before serving or keep the crumb layer slightly separate until last minute. A typical mistake is not chilling long enough which leaves the filling loose and makes the parfait collapse on first scoop; allow at least an hour for a stable set.
