3 pie oatmeal crumb topping Recipes

butter, brown sugar, flour, oatmeal (any type but instant ), cinnamon, salt

basic flaky pie pastry (9 1/2 inch deep dish uncooked and refrigerated ), peeled cored and thinly sliced golden delicious apples, granulated sugar , plus, granulated sugar, lemon , juice of, lemon , zest of, ground nutmeg, cornstarch, all-purpose flour, rolled oats (old-fashioned or quick-cooking), light brown sugar, ground cinnamon, salt, cold unsalted butter , cut into 1/4-inch pieces