INGREDIENTS
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6 oz. semi-sweet baking chocolate or dark chocolate, coarsely chopped (such as Baker's brand semi-sweet chocolate)
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¾ cup unsalted butter
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1½ cups granulated sugar
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½ cup light brown sugar, packed
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2 tbsp. espresso or brewed coffee, any temperature; optional but recommended
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1½ tsp. vanilla extract
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3 large eggs
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1 cup all-purpose flour
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Pinch of salt to taste, optional
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For the peanut butter buttercream:
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1 cup creamy peanut butter (I recommend Jif or Skippy—not a fancy, high-end or natural peanut butter, since they separate, and your frosting results could be compromised)
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½ cup unsalted butter, softened
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2 tsp. vanilla extract
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1½ to 2 cups confectioner's sugar
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Pinch of salt to taste, optional
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Sprinkles, optional