1 (18 1/2 oz.) box yellow cake mix
1/2 c. butter, melted
4 eggs
1 (30 oz.) can solid pack pumpkin (3 cups)
1 c. sugar, divided
1/2 c. light brown sugar (firmly packed)
2/3 c. evaporated milk
1 1/2 tsp. cinnamon
1/2 c. chopped walnuts
1/4 c. butter, softened

Preheat oven to 350 degrees. Grease and flour a 13 x 9 inch baking pan. Remove 1 cup of the cake mix; reserve. In a small bowl, lightly beat 1 egg. In a large bowl, stir together remaining cake mix, melted butter and beaten egg. Press into prepared pan.

In a large bowl, lightly beat remaining 3 eggs. Stir in pumpkin, 1/2 cup of the sugar, brown sugar, evaporated milk and cinnamon. Pour over cake mixture in pan. To the 1 cup cake mix, add remaining 1/2 cup sugar, walnuts and softened butter; mix until crumbly. Sprinkle over pumpkin mixture. Bake 50 to 60 minutes. Serve warm or cool.