Ingredients 1 (21.5 ounce) package brownie mix1 (8 ounce) package cream cheese, softened2 tablespoons butter, softened 1 tablespoon cornstarch1 (14 ounce) can sweetened condensed milk1 egg1 teaspoon vanilla extract1 (16 ounce) container prepared chocolate frosting Directions Preheat oven 350 degrees F (175 degrees C). Grease a 9×13 inch baking pan. Prepare brownie mix according to …