Heat oven to 375 degrees F.
Place pears, grape juice, lemon juice and cherries in small bowl; toss to coat all ingredients evenly.
Combine butter, sugars, oats, cinnamon and nutmeg in small bowl. Cut butter into mixture using pastry blender until mixture resembles coarse meal.
Coat 9-inch-square casserole with nonstick cooking spray. Spread pear mixture evenly in casserole. Sprinkle oat mixture over the top of the casserole.
Bake in 375 degree F oven for 30 to 35 minutes or until mixture starts to bubble and pears are fork-tender. Let stand 15 to 20 minutes. Serve with vanilla ice cream if desired. Makes 6 servings.