Pumpkin Pie Cake

My mother always made this cake for us growing up, and it has now become a staple in my home as well. It is very simple to make and is a great alternative to the classic pumpkin pie.

Ingredients:
1 lg can pumpkin
Yellow cake mix (I usually buy the deluxe, with pudding in it...makes it even more moist)
3 eggs
1/2 cup melted butter
1/4 cup softened butter
2/3 cup milk
1/3 cup sugar
1 1/2 tsp cinnamon
1/2 tsp nutmeg
1/2 tsp pumpkin pie spice

Mix 1 egg, melted butter, and cake mix minus 1 cup (save for topping). Press into a greased and floured 13x9 cake pan.
Beat 2 eggs well and mix with pumpkin, milk, nutmeg, pumpkin spice, and 1 tsp cinnamon. Pour into pan on top of cake.
Mix remaining 1 cup of cake mix, softened butter, and 1/2 tsp cinnamon, cutting together until crumbly. Sprinkle on top of pumpkin.
Bake at 350* for 1 hour 10 minutes or until the topping is golden brown.
Cool and serve with whipped cream topping.