"This easy blueberry coffee cake is packed full of plump, juicy blueberries and topped with a buttery, brown sugar streusel. Yum!..."
INGREDIENTS
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6 tbsp unsalted butter (softened )
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1 cup sugar
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1 tsp vanilla extract
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1 egg
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1 1/2 cups flour
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1 1/2 tsp baking powder
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1/2 cup milk
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1 cup blueberries
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5 tbsp brown sugar
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1/2 cup flour
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4 tbsp unsalted butter (very cold)