The original recipe calls for just apples, but I preferred to add a handful of cranberries... just because they added a splash of color and a little tartness to to counteract all that sweet stuff. I dug up cranberries that I froze last fall, using up the final bag just in time to buy some new ones to store for use during the next year. You could certainly use all apples to make this pie (but it wouldn't be nearly as pretty!)