Preheat oven to 350°F and grease a 9x13 baking dish.
Mix the flour, sugar, and butter until crumbly. Press into the greased 9x13 pan. Bake 20 minutes.
Filling
In a stand mixer fitted with the paddle attachment, add 1 can of pumpkin puree, 1 can evaporated milk, 2 eggs, 3/4 cup sugar, 1 tsp cinnamon, 1/2 tsp. ginger, 1/4 tsp cloves, and 1/2 tsp salt. Mix together until fully combined.
Pour into baked crust and bake at 350°F for 40 minutes or until filling is set. Cool completely before cutting and serving.
Notes
Store in an airtight container in the refrigerator for up to three days or in a freezer for up to three months. Add whipping cream right before serving.