"Starbucks blueberry muffin recipe. Easy copycat recipe for delicious most blueberry muffins with a streusel topping...."
INGREDIENTS
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3 tablespoons melted butter
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2 teaspoons lemon zest
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3 tablespoons sugar
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1/2 cup flour
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2 eggs
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2½ cup flour
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1 cup sugar
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2 teaspoon baking powder
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½ teaspoon baking soda
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1 cup milk or buttermilk
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3 teaspoons melted butter
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1/4 cup vegetable oil
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2 cups blueberries (fresh or frozen)