INGREDIENTS
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1 cup unsalted butter, at room temp
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1 cup white sugar
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1 cup brown sugar
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2 eggs
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1/2 cup Guinness
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2 1/2 cups flour
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2/3 cup cocoa
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1 tsp baking soda
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1/2 tsp salt
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For the Irish buttercream frosting:
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4 cups powdered sugar
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2 sticks unsalted butter, at room temp
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3 Tbsp Bailey’s Irish cream
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2 Tbsp milk