This Apple Cranberry Oat Crumble Recipe (Apple Crisp) includes tangy Granny Smith apples and cranberries that cook down perfectly tender under a salty sweet, crunchy oat topping. This cozy cranberry apple crisp is best served warm with a scoop of vanilla ice cream. It’s the perfect dessert for a last-minute get together because it can even be made completely in the microwave, if needed!