- Crust:
- 3/4 cup all-purpose flour
- 1/4 cup cornstarch
- 1/4 cup powdered sugar
- 1/4 cup white sugar
- 6 tablespoons LAND O LAKES® Butter
- Filling:
- 3/4 cup white sugar
- 3 eggs
- 2 tablespoons cornstarch
- 1/2 teaspoon baking powder
- 7 tablespoons lemon juice
- 1 1/2 tablespoons lemon zest
- Powdered sugar for dusting (optional)
- Preheat oven to 350 degrees F (175 degrees C). Line a 7 x 11-inch baking pan with foil; spray with cooking spray.
- Combine flour, 1/4 cup cornstarch, 1/4 cup powdered sugar, and white sugar in a bowl. Mix in the butter; and stir until well mixed and crumbly. Press mixture in bottom of prepared pan.
- Bake in preheated oven until lightly golden, about 15 minutes.
- Mix 3/4 cup white sugar, eggs, 2 tablespoons cornstarch, baking powder, lemon juice and lemon zest together in a mixing bowl using an electric mixer or wire whisk. Blend thoroughly.
- Pour filling over hot crust. Return pan to oven and continue baking until filling is set, 18 to 20 minutes.
- Cool completely before cutting into bars. Sprinkle with powdered sugar if desired.