"This is a delicious treat made with fresh blackberries! Very simple to prepare for snack or dessert...."
INGREDIENTS
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1 cup all-purpose flour
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3/4 cup firmly packed brown sugar
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1/4 cup butter
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1/2 cup sour cream
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1 large egg, beaten
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3/4 teaspoon baking soda
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1/4 teaspoon salt
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1 teaspoon ground cinnamon
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1/2 teaspoon vanilla extract
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1 cup fresh blackberries
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powdered sugar