Sure. A fully-baked fruit crisp can be frozen and kept for up to 3 months. But I have a better idea for you: Make an extra batch or two of this easy crisp topping and freeze it for up to several months. Whenever you have a glut of lush fruits just screaming to be baked, toss them in a dish, add some sugar, top with some of the crisp mix, and turn it all into a quick dessert. In the summertime, swap in plums and blueberries or peaches and blackberries for the apples and cranberries. In the fall, think pears and quince. The combo are endless!