Mix dry mixes(cake mix and vanilla pudding). Add oil and sour cream and blend together. Add eggs one at a time. Spray Bundt Pan well. Sprinkle Bundt Pan with cinnamon sugar. Add batter and sprinkle top of cake with cinnamon sugar. Bake at 350 for 45-50 minutes. Let cool in pan 10 minutes. Turn out and sprinkle cake again with cinnamon sugar.
I sprayed pan well and added chopped pecans and coconut to bottom. When cooled I mixed powdered sugar and milk and drizzled over cake.