Pumpkin Pie Cake Dessert

1 can pumpkin puree (need 2 cups)
1 can evaporated milk
4 eggs, beaten
1 c sugar
2 tsp cinnamon
box of yellow cake mix
1 c melted butter
chopped nuts, optional

Mix pumpkin, milk, eggs, sugar and cinnamon together and pour into greased 9x13 pan. Sprinkle dry cake mix evenly over top; then drizzle melted butter over the cake mix. Sprinkle with chopped nuts, if using.

Bake for 50-55 minutes at 350 degrees. Serve with whipped cream. Optional additions: drizzle caramel sauce over whipped cream; sprinkle cinnamon over whipped cream; add chopped toffee bits over whipped cream. ENJOY!