Pumpkin Cake

1 29 oz can pumpkin
3 eggs
4 tsp pumpkin pie spices
1 can evaporated milk
1 cup sugar
1/2 tsp salt
1 box of yellow cake mix

Mix first 6 ingredients together and pour into a greased and floured 9x13 baking pan.
Sprinkle one box of yellow cake mix on top
Drizzle one cube melted butter over the cake mix
Sprinkle with chopped nuts
Bake at 350 degree for 60 minutes