1 box yellow cake mix (remove 1 cup)
1 stick butter
1 egg, beaten

Mix and spread over bottom of pan (9 by 13 pan)

Filling:

1 large can of pumpkin
1 tsp. cinnamon
3 eggs
1 1/2 c. light brown sugar
2/3 c. milk
1/4 c. white sugar

Beat well, spread over bottom layer. Mix 1 cup cake mix, 1/2 c. white sugar, 1/2 c. nuts and 1/2 stick of butter. Crumble butter into mixture. Spread over filling. Bake at 350 degrees for 50 minutes. Top with Cool Whip.