Pumpkin Pie Dessert

Pumpkin Pie Dessert
1 29 oz can pumpkin
1 tsp salt
4 eggs
1 large can evaporated milk
1 1/2 c sugar
3 tsp pumpkin pie spice
1 pkg yellow cake mix
1 c melted butter
1/2 c chopped nuts
Mix pumpkin, salt and eggs. Beat well. Add milk, sugar and pie spice. Mix well. Pour into 9 x 13 pan. Sprinkle dry cake mix over mixture in pan. Then pour melted butter over the top of dry cake mix, top with nuts. Bake at 350 degrees for one hour. Cool, serve with Kool Whip.