YOU WILL NEED A 13 X 9 INCH CAKE PAN TO MAKE THIS RECIPE. AN OLD, REGULAR 13 X 9 INCH PAN WILL NOT BE DEEP ENOUGH. Newer 13x9 inch pans are all made to be at least 2 ¼ inches deep. Make sure yours is before you start to prevent the possibility of your cake overflowing over the sides of your pan.