INGREDIENTS
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1/2 cup softened butter or coconut oil*
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1/2 cup brown sugar
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1/2 cup white sugar
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1 egg
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1 teaspoon vanilla
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1/2 teaspoon baking soda
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1/2 teaspoon salt
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1 cup cocoa powder
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1/2 cup white chocolate chips
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1/2 cup semi-sweet chocolate chips
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1/2 cup walnuts (optional)