Cream butter with cream cheese, 1/4 cup sugar and corn starch. Add 1 egg, 2 tbl milk and 1/2 tsp vanilla. Beat at high speed of mixer until smooth and creamy.
Grease and flour bottom of 13x9-inch pan. Combine flour with 2 cups sugar, salt, baking powder and soda in large mixing bowl. Add 1/2 cup butter and 1 cup milk. Blend well at lowest speed of mixer. Beat 1 1/2 min at low speed. Add 1/3 cup milk, 2 eggs, choco-bake and 1 tsp vanilla. Continue beating 1 1/2 min at low speed. Spread half of batter in pan. Spoon cheese mixture over batter, spreading carefully to cover. Top with remaining batter; spread to cover. Bake at 350o for 50 to 60 min or until cake springs back when touched lightly in center. Cool and frost..
1/4 cup milk
1/4 cup butter
6 oz, pkg semi-sweet chocolate morsels
1 tsp vanilla extract
2 1/2 cups sifted confectioners' sugar
Combine milk and butter in saucepan; bring to a boil. Remove from heat. Blend in chocolate morsels. Stir in vanilla extract and confectioners' sugar. Beat until of spreading consistency