"These Blueberry Crumb Bars have a buttery crumb crust and a juicy, plump blueberry filling, all topped with more buttery streusel for a delicious bar treat!..."
INGREDIENTS
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3 cups all-purpose flour
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1 cup sugar
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1 tsp baking powder
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1/2 tsp salt
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1 cup butter, cold, cut into Tablespoons
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1 egg
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4 to 5 cups fresh blueberries (2lbs)
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1/2 cup sugar
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4 tsp cornstarch
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3 Tbsp lemon juice