Blackberry and Mascarpone Crumble Bars

1 . Stage

Preheat the oven to 375 degrees F (190 degrees C). Grease a 9x13-inch baking pan.

2 . Stage

Mix flour, almond meal, sugar, baking powder, cinnamon, and salt for dough together in a bowl. Cut in butter until it is pea-sized. Mix in egg and vanilla extract until dough is crumbly.

3 . Stage

Pat 1/2 of the dough into the bottom of the prepared pan, saving the remaining dough for the topping.

4 . Stage

Bake in the preheated oven until edges just start to turn brown, 15 to 20 minutes. Remove from the oven and allow to cool. Leave the oven on.

5 . Stage

Beat mascarpone cheese, sugar, 1/2 of the lemon zest, and 1/2 of the lemon juice together in a bowl for mascarpone filling.

6 . Stage

Combine blackberries, sugar, remaining lemon zest, remaining lemon juice, cornstarch, orange liqueur, and salt for blackberry filling in another bowl.

7 . Stage

Spread mascarpone filling across the cooled bottom crust. Spread blackberry filling over mascarpone filling, then sprinkle reserved dough in crumbles evenly over top.

8 . Stage

Bake in the preheated oven until filling is bubbling and top crust is lightly browned, 40 to 45 minutes. Cool to room temperature, about 30 minutes. For best results, refrigerate for 8 hours to overnight before cutting into 16 bars.