INGREDIENTS
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Time: About 1 hour
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Makes: 6 to 8 servings
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5 tablespoons cold butter, plus more for greasing the pan
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6 cups pitted, sliced apples (2 to 3 pounds)
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Juice of ½ lemon
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2/3 cups packed brown sugar
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½ cup rolled oats (not instant oats)
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½ cup all-purpose flour
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¼ cup chopped nuts, optional
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1 cup vanilla ice cream or whipped cream (optional)