"Black walnuts have a more distinctive flavor than the traditional English walnuts. Black walnuts have a short shelf life and it's best to store them in the freezer.—Doug Black, Conover, North Carolina..."
INGREDIENTS
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1 cup butter, softened
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2 cups packed brown sugar
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2 large eggs, room temperature
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1 teaspoon vanilla extract
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3-1/2 cups all-purpose flour
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1 teaspoon baking soda
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1/4 teaspoon salt
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2 cups chopped black walnuts or walnuts, divided