Duncan Hines Coffee Cake 1 (18.25 ounce) box yellow cake mix 1 small box instant vanilla pudding 1 cup sour cream 4 whole eggs 1/2 cup vegetable oil 1/2 cup milk Blend cake mix and pudding. Add rest of ingredients. Beat all together for 10 minutes at medium speed with electric mixer. Topping 3 teaspoons cinnamon 1/4 cup granulated sugar 1 tablespoon flour Nuts or chocolate chips (optional) Mix together. Pour half of the batter in a greased angel food pan. Sprinkle half of the topping on the batter; cut in and add remaining batter and sprinkle with the remaining topping on cake. Bake at 350 degrees F for 50 minutes or until it passes the clean wooden pick test.