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1 cup butter or margarine, softened
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1/2 cup granulated sugar
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1/2 cup light brown sugar, firmly packed
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1 large egg
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1 teaspoon vanilla extract
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2 cups all-purpose flour
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1/2 teaspoon baking soda
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1/8 teaspoon salt
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12 ounces chocolate chips
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3/4 cup chopped pecans or walnuts, (optional)
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