1 box yellow cake mix (save 1 c. for topping)
1 egg
1/2 c. melted butter

FILLING:

1 can (16 oz.) solid pack pumpkin
1/2 c. sugar
1 1/2 tsp. cinnamon
3 eggs
1/4 c. brown sugar

TOPPING:

1/2 c. sugar
1/2 c. chopped nuts
3 tbsp. butter
1 c. cake mix (reserved)

Blend cake mix (minus 1 cup) with eggs and melted butter; spread into greased 9 x 13 inch pan. Beat filling ingredients together with mixer. Pour filling over crust. Combine topping ingredients and crumble over filling. Bake in preheated 350 degree oven for 45 minutes. Serve warm or cold. Whipped cream or ice cream topping is a nice touch.