Instructions

Preheat oven to 350 degrees. Line 8x8 or 9x9 square baking dish with foil or parchment paper.

Combine powdered sugar and flour in a large bowl.

Cut butter into flour mixture using a pastry cutter or two knives, until mixture resembles small pea like crumbs.

Press dough into the pan evenly.

Bake crust for 10 minutes. Remove from oven and cool for 5 minutes.

While crust is cooling, make filling.

Combine filling ingredients and beat until smooth, about 3 minutes.

Pour into crust and bake for 20-25 minutes or until filling has set.

Remove from oven and cool completely before slicing. Refrigerate for 1 hour before slicing for cleaner cuts.