1 pkg. (1 lb. 3 oz.) yellow (or lemon, etc.) cake mix
1 pkg. vanilla pudding
4 eggs
1 c. water
1/2 c. butter
1 tsp. cinnamon
1/4 c. sugar
1 tsp. cinnamon

Blend all cake ingredients well; beat on medium speed for approximately 10 minutes. Pour batter into greased 10 inch tube pan. Combine sugar and cinnamon, sprinkle over batter and swirl with knife edge. Bake at 350 degrees for 45 minutes or until done.