Directions: In a large bowl, cream the butter, cream cheese and sugar until light and fluffy, 5-7 minutes. Add eggs one at a time beating well. Beat in vanilla, add flour until well blended. 2. pour into a greased 15x10x1 inch sheet pan or baking dish. Bake at 325 degrees for 30-35 minutes or until the center is done. Completely cool on a wire rack. For the Frosting: In a small saucepan, combine sugar and milk. Bring to a boil over medium heat. Cover and cook for 3 minutes. Stir in butter and chocolate chips until melted. Cool slightly, then stir and spread over the top of the cake. Top with sprinkles for extra yumminess.