Sin Squares
["1 pkg. yellow cake mix", "1 stick butter, melted", "4 eggs", "2 tsp. vanilla", "6 Tbsp. cocoa", "6 Tbsp. boiling water", "8 oz. cream cheese", "1 box powdered sugar"]
["Mix cake mix with butter, 1 egg and 1 teaspoon vanilla.", "Press into a 9 x 17-inch pan for crust."]
["yellow cake mix", "butter", "eggs", "vanilla", "cocoa", "boiling water", "cream cheese", "powdered sugar"]