"Berry bliss!..."
INGREDIENTS
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½ cup butter (1 stick), room temperature
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⅓ cup granulated sugar
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¼ cup brown sugar
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1 egg
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1 ½ teaspoon vanilla
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1 ½ cup flour
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¾ tablespoon cornstarch
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½ teaspoon baking powder
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½ teaspoon baking soda
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½ teaspoon salt
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⅔ cup fresh blueberries
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2 tablespoon blueberry jam
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2 tablespoons butter, room temperature
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2 tablespoon brown sugar
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1 tablespoon granulated sugar
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⅓ cup flour
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¼ teaspoon cinnamon