To make a larger crisp that serves 10, double all the ingredients, use a 13 x 9-inch baking pan, and bake for 55 minutes at 375 degrees, without increasing the oven temperature. If making an apple crisp, we recommend equal quantities of Granny Smith and McIntosh apples. Peel, core, and cut apples and pears into one-inch chunks. Peel, pit, and cut nectarines, peaches, and plums into half-inch wedges. If using plums, add one tablespoon quick-cooking tapioca to the fruit mixture. Half a teaspoon of grated fresh ginger makes a nice flavor addition to all the fruits.