INGREDIENTS
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For the crust and crumble:
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½ cup granulated sugar
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½ cup brown sugar
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1 tsp. baking powder
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3 cups all-purpose flour
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1 cup (2 sticks) butter
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1 egg, slightly beaten
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½ tsp. vanilla
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For the filling:
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4 cups fresh blueberries
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½ cup granulated sugar
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3 tsp. cornstarch