Not sure that this is exactly a 'cake' or a 'pie', but it was the closest board I could see
Pumpkin BuckleINGREDIENTS: 1/2 cup butter, melted
1 cup all-purpose flour
1 cup sugar
4 teaspoons baking powder
1/2 teaspoon salt
1 cup milk
1 teaspoon McCormick® Pure Vanilla Extract
FILLING: 3 cups canned pumpkin
1 cup evaporated milk
2 eggs
1 cup sugar
1/2 cup packed brown sugar
1 tablespoon all-purpose flour
1 teaspoon ground cinnamon
1/2 teaspoon salt
1/4 teaspoon each ground ginger, cloves and nutmeg
TOPPING: 1 tablespoon butter
2 tablespoons sugar
DIRECTIONS:1. Pour butter into a 13-in. x 9-in. baking dish; set aside. In a large bowl, combine the flour, sugar, baking powder and salt. Stir in milk and vanilla until smooth. Pour into prepared pan.
2. In a large bowl, beat the pumpkin, milk and eggs. Combine the remaining filling ingredients; add to pumpkin mixture. Pour over crust mixture (do not stir). Dot with butter and sprinkle with sugar.
3. Bake at 350° for 55-60 minutes or until a knife inserted near the center comes out clean and the top is golden brown. Yield: 12 servings.
Original recipe:
http://www.tasteofhome.com/recipes/magic-pumpkin-buckle