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["Toast nuts in preheated 325' oven for 3 minutes. Cool and chop coarsely in food processor or by hand into 1/4"" chunks. (This is important: if the pieces are bigger, they could burn during baking.)", "To make the topping, put flour, sugars and cinnamon in a bowl. Work the slightly softened butter in with your hands by rubbing the pieces of it lightly and quickly between your fingers, or use a pastry blender. When mixture starts to hold together and look crumbly, work in the cooled nuts.", "Preheat oven to 375'", "Quarter, core and peel the apples and slice into a bowl. There should be 5-6 cups. Sprinkle with a couple of teaspoons of sugar to taste. Add cinnamon. The topping is sweet, so don't over-sweeten the apples.", "Put the sliced apples in a shallow unbuttered baking dish: 9"" or 10"" pie pan or a 9"" square cake pan. Level the apples and cover them evenly with a layer of the topping.", "Bake at 375' until the topping is golden brown all over and the apples are tender, about 30-45 minutes. If the topping has browned enough but the apples aren't cooked yet, turn the heat down to 350' and lay a piece of foil loosely over the top.", "Serve warm with vanilla ice cream or a pitcher of heavy cream."]