Preheat oven to 350°. Butter a deep 9x13 baking dish. Make topping: in a bowl combine flour, sugar, brown sugar, and salt. Rub in butter with fingertips until mixture forms pea-sized lumps. Stir in oats and pecans.

Make filling: in a large bowl mix together apples, pears, and cranberries. Remove zest from orange and squeeze juice, add both to bowl. Stir in corn starch and sugar. Pour into baking dish, sprinkle with topping, and bake until filling is bubbling and topping is golden brown and crisp, about 1 hour 15 minutes.

serves 8, 762 calories, 34 grams fat