Blueberry Pie Bars

1. Prepare the Crust

Begin by transforming shortbread cookies into fine crumbs using a food processor. Combine these crumbs with sugar, flour, kosher salt, and melted unsalted butter. Press this mixture into a parchment-lined 9-inch square pan and toast in the oven for about 15 to 20 minutes, until golden-brown.

2. Make Cream Cheese Filling

Blend room-temperature cream cheese with sugar and a whole large egg until smooth and creamy. Spread this mixture over the pre-baked crust.

3. Prepare Blueberry Layer

Gently toss wild blueberries with cornstarch, sugar, and a pinch of salt. Evenly layer this blueberry mixture over the cream cheese filling.

4. Create Crumbly Topping

Process more shortbread cookies with flour, salt, baking powder, and sugar. Add room-temperature unsalted butter and an egg yolk until it resembles a moist, crumbly dough. Sprinkle this topping over the blueberries.

5. Bake and Set

Bake for 35 to 40 minutes until the center is set. Let the bars cool completely on a rack, then chill them in the refrigerator for at least an hour before cutting into squares.