1 box chocolate cake mix
8 oz. cream cheese
2 tbsp. flour
1 egg
2 tbsp. butter
1/4 c. sugar
2 tbsp. milk
1 tsp. vanilla

Use directions on box and make cake accordingly. Spread half of the batter into well greased 9 x 13 inch pan. In small bowl, add remaining ingredients. Spread carefully over cake batter, leaving 1/2 each from edge of pan. Top with remaining batter. Bake as directed on box. Cool before frosting.