This works well with many fruits. Morgan made something similar using apples, pears and cranberries.
1/2 cup quick-cooking rolled oats
1/2 cup packed brown sugar
1/4 cup all-purpose flour
1/2 tsp. cinnamon
1/4 cup butter
1 tsp. grated lemon zest, optional
5-6 cups peeled, sliced apples (2 pounds)
2 Tbsp. sugar
Preheat oven to 350F
Combine oats, brown sugar, flour, cinnamon & a pinch of salt. Cut in butter until pea-size crumbles form. Set aside.
Peel, core and slice fruit and place in 10x6x2-inch baking dish. Sprinkle with sugar.
Top with crumb mixture. Sprinkle with a grating of nutmeg or a sprinkle of ground cloves, if desired.
Bake 350F 40-45 minutes. Serves 6