1 pkg. yellow cake mix
1/2 c. butter, melted
1 egg

Grease 9 x 13 pan. Reserve 1 1/3 cups cake mix for topping. Combine remaining ingredients and press into pan.

FILLING: Combine 3 cups pumpkin pie filing, 2 eggs, and 2/3 cup milk. Pour over crust.

TOPPING: 1 1/3 cups cake mix, 1 tablespoon sugar, 1 teaspoon cinnamon, 1/4 cup soft butter. Crumble over top of filling. Bake at 350 degrees for 45 minutes. Top with whipped cream.