01 -
Mix butter, powdered sugar, and flour until crumbly. Knead in the egg yolk to form a soft dough.
02 -
Press the dough into tart molds about 2.6 inches wide. Trim edges, then poke holes in the bases with a fork.
03 -
Heat the oven to 410°F. Bake the shells until golden (about 15 minutes). Once cooled, gently remove from molds.
04 -
Let cream cheese soften at room temperature. Stir it with the powdered sugar until smooth and creamy.
05 -
Add heavy cream to the cheese mixture a little at a time, mixing each time. Then, stir in cornstarch fully.
06 -
Pipe the smooth filling into the baked tart shells. Freeze for about 4 hours to set completely.
07 -
Preheat the oven to 410°F. Mix water or milk with egg yolk to make a glaze. Brush it onto the frozen tarts and bake for 15 minutes.
08 -
You can serve these tarts warm, cool, or even frozen—each way has its own unique taste.