Pumpkin Crunch

Classic dump cake made with pumpkin

1 15 oz. canned pumpkin
1 12 oz. evaporated milk
1 c. sugar
2 eggs
1/4 teaspoon cinnamon
1/2 cup melted margarine
1 box yellow cake mix
1 cup chopped walnuts (optional)

Preheat oven to 350. Combine first five ingredients in a bowl
and mix together. Pour mixture into a 9x13 pan. Sprinkle
cake mix evenly over the entire mixture in pan. Sprinkle
chopped nuts over cake. Spoon melted margarine evenly
over mixture. Bake for 50-55 minutes. Serve with whipped
cream or vanilla ice cream.