Pumpkin Cake One Cake mix- I used yellow 1 -15 ounce can 100% pumpkin- puree, not pumpkin pie filling Preheat oven to 350°. In a large bowl mix cake mix with pumpkin filling using a hand mixer or a stand mixer. Beat on medium for 2 minutes. Pour batter into a greased 7 x 11 inch baking dish. Bake for 28 minutes or until tooth pick comes out clean. Cool completely before frosting. Serves 8.