Berry-Peach-Cornmeal Crisp

Crunchy cornmeal in the topping of this easy crisp adds pleasant texture and great flavor. I created this recipe to show off the fruit from the heirloom peach tree we harvest every summer. This crisp would be equally delicious with nectarines in place of the peaches and blueberries or raspberries instead of blackberries. Whatever the fruit, we like to serve this with vanilla ice cream.