INGREDIENTS
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2 1/2 cups fresh or frozen blueberries
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1 teaspoon vanilla extract
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1/2 lemon, juiced
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1 cup white sugar, or to taste
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1/2 teaspoon all-purpose flour
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1 tablespoon butter, melted
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1 3/4 cups all-purpose flour
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4 teaspoons baking powder
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6 tablespoons white sugar
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5 tablespoons butter
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1 cup milk
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2 teaspoons sugar
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1 pinch ground cinnamon