INGREDIENTS
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3/4 cup unsalted butter, (softened)
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1 cup sugar
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2 large eggs
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1/2 teaspoon vanilla
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2 cups all-purpose flour
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1 1/2 teaspoons baking powder
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1/2 teaspoon baking soda
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1/2 teaspoon salt
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1 cup whole buttermilk
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1/4 cup blackberry sauce (recipe follows)
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1 cup unsalted butter, softened
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1/3 cup blackberry sauce
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4 cups confectioners' sugar
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fresh blackberries for garnish