Melt 2 sticks butter and set aside. Cover bottom of 13 x 9 Pyrex dish with waxed paper.

Beat 1 large can pumpkin, 3 eggs, 13 ounce can Pet evaporated milk, 3/4 to 1 cup sugar, 1 teaspoon cinnamon or pumpkin pie spice. Mix together very well and pour into pan. Sprinkle box of yellow cake mix over top, DRY. Pour butter (oleo) over top. Bake at 325 degrees for glass pan, 350 degree for metal for 45-50 minutes. Let rest 5-10 minutes. Invert onto tray. Peel wax paper off. Will firm up.