"Make and share this Concord Grape Pie recipe from Food.com...."
INGREDIENTS
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4 1/2 cups concord grapes (2 pounds)
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1 cup sugar
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1/4 cup all-purpose flour
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2 teaspoons lemon juice
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1/8 teaspoon salt
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1 unbaked pastry shell (9-inches)
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1/2 cup quick-cooking oats
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1/2 cup brown sugar, packed
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1/4 cup all-purpose flour
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1/4 cup butter or 1/4 cup margarine