01 -
Combine flour, powdered sugar, and butter. Mix until the mixture resembles a crumb-like consistency. Add egg yolk and knead into a smooth dough.
02 -
Press the dough into 2.6-inch tart molds. Trim the edges and prick the bottoms with a fork.
03 -
Preheat the oven to 410°F. Bake the tart shells for 15 minutes or until golden brown. Let cool before removing from the molds.
04 -
Soften cream cheese at room temperature. Mix with powdered sugar until smooth.
05 -
Gradually add heavy whipping cream in three portions, mixing well after each addition. Stir in cornstarch until fully incorporated.
06 -
Pipe the cheese filling into the cooled tart shells. Freeze the assembled tarts for 4 hours until firm.
07 -
Preheat the oven to 410°F. Brush the frozen tarts with an egg wash (egg yolk mixed with milk or water). Bake for 15 minutes.
08 -
Serve the tarts warm, chilled, or frozen for different textures.