1 box yellow cake mix
1/2 c. butter, melted
1 slightly beaten egg

Reserve 1 cup cake mix. Mix remainder of above ingredients and pat into greased bottom only of 19 x 13 inch pan.

FILLING:

1 can pumpkin
2 1/2 tsp. cinnamon
1/2 c. firmly packed brown sugar
2 eggs
2/3 c. milk

Mix above ingredients together, pour over crust.

TOPPING:

1 c. reserved cake mix
1 tsp. cinnamon
1/4 c. butter

Combine topping ingredients until crumbly and sprinkle over cake. Bake at 350 degrees for 50-55 minutes. When cool top with Cool Whip. Enjoy!