Philadelphia Style Butter Cake Be The First To Review By Anonymous recipe This is a very rich, sweet, gooey, buttery cake. I store leftovers in the refrigerator and they taste just like cheesecake! Yummy! Philadelphia Style Butter Cake Ingredients 1 egg1 (18.25 ounce) package yellow cake mix1/2 cup butter, softened8 ounces cream cheese, softened1 (16 ounce) package confectioners’ sugar, sifted2 eggs1 teaspoon vanilla extract Instructions 1 Preheat oven to 350 degrees F (175 degrees C). Grease and flour one 9×13 inch pan. 2 Beat together 1 egg, cake mix, and butter for 5 minutes. Mix and pour into prepared pan. 3 Cream together cream cheese, confectioners’ sugar, 2 eggs, and vanilla extract. Pour this on top of the cake base. 4 Bake 35-40 minutes until browned. Cool 15 minutes and cut into squares.