INGREDIENTS
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1 (15.25 ounce) box super moist yellow cake mix
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1 stick or 8 tablespoons or 1/2 cup butter, melted
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3 eggs
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1/2 cup milk
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1/2 cup sour cream
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2 cups fresh blackberries
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1/4 cup white granulated sugar
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2 teaspoons ground cinnamon
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1/2 cup chopped nuts, pecans or walnuts