1 pkg. Jiffy cake mix (white or yellow)
1 pkg. french vanilla instant pudding mix
1/3 c. soft butter
1 egg
1/2 c. water

Mix all together until smooth. Put in 9x9 inch greased and floured pan. Mix together 1/3 cup sugar and 1/2 tsp. cinnamon and sprinkle over batter. Cut into batter with a knife. Bake at 350 degrees for 30 to 35 minutes.