INGREDIENTS
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1/2 cup butter, softened
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1/2 cup brown sugar
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1/4 cup granulated sugar
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1 egg
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1 teaspoon vanilla extract
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1 cup flour 1/3 cup cocoa powder
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1 teaspoon espresso powder or instant coffee (optional)
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1/4 teaspoon baking soda
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1/8 teaspoon salt
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1 cup Reese's peanut butter chips
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8 Reese's peanut butter cups (full size)