"These Blueberry Muffins with Crumb Topping are just heavenly. They are crunchy on the outside, sweet and soft on the inside and plump full of juicy sweet blueberries. ..."
INGREDIENTS
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1/2 cup brown sugar
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1/2 cup all purpose flour
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1/4 cup butter softened and cut in four tablespoons
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1 1/2 teaspoons ground cinnamon
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1 1/2 cups flour
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3/4 cup sugar
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1/4 teaspoon salt
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2 teaspoons baking powder
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1 egg
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1/3 cup buttermilk
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1/3 cup vegetable oil
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1 1/4 cup fresh blueberries