pumpkin pie cake

1 box white or yellow cake mix, reserve 1 cup
1/2 cup melted butter
1 egg

1 (29oz) can pumpkin
1 (12oz) can evaporated milk
1 1/2 cups sugar
4 eggs
1 teaspoon salt
1 tablespoon pumpkin pie spice
1 teaspoons cinnamon
1 teaspoon vanilla

1 cup reserved cake mix
1/4 cup sugar
1 teaspoon pumpkin spice
3 tablespoons cold butter

Preheat oven to 350. Grease bottom of 9" x 13" baking dish. In a medium mixing bowl combine cake mix (reserving one cup for the topping), melted butter and egg. Mix well. With a rubber spatula, spread mixture evenly into greased baking dish.

In a large bowl, mix all filling ingredients well then pour over crust mixture.

In a medium bowl, mix topping ingredients until crumbly then sprinkle on top of the filling mixture.

Bake for 1 hour. Let cool for 1 to 2 hours before serving. Serve warm with whipped cream or vanilla ice cream. Or, serve at room temperature.