Jen's Great Pumpkin Dessert

1 can, 15 oz. Pumpkin
1 can, 12 oz Evaporated Milk
3 eggs
1 C. Sugar
4 tsp. pumpkin pie spice
1 pkg (18 1/4 oz.) Yellow cake mix
¾ C. butter, melted
1 ½ C chopped walnuts (optional)
Whipped cream or ice cream for topping

Pre-heat oven to 350°. In a mixing bowl, combine the first five ingredients. Transfer to a greased 9x13 cake pan or dish. Sprinkle the dry cake mix over the pumpkin mixture, covering it entirely. Drizzle melted butter over the cake mix. Top with walnuts (optional).

Bake at 350° for 1 hour or until a knife inserted near the center comes out clean. Top with whipped cream or ice cream when serving.