PUMPKIN DUMP CAKE 1 (15 0z.) can pumpkin, 1 can evaporated milk, 3 large eggs, 1C sugar, 1t cinnamon, 1 box Spice Cake Mix, 1C butter, melted. :Preheat oven to 350. grease 9x13 pan. combine pumpkin, milk, eggs, sugar and cinnamon. Pour into pan. Sprinkle dry cake mix on top, drizzle with melted butter. Bake 55-60 min. Cool for 30.