INGREDIENTS
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1 cup butter, room temperature
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1/2 cup sugar
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1/2 cup brown sugar
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1/4 cup Baileys Irish Cream
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1 egg
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1/2 tsp vanilla extract
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2 1/2 cups all-purpose flour
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1 tsp baking soda
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1/4 cup dark cocoa powder
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1 tsp cornstarch
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1 1/2 cups white chocolate chips
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sprinkles, optional