INGREDIENTS
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2½ sticks unsalted butter, at room temperature
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2 cups sugar
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2 large eggs
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1 tablespoon vanilla extract
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¾ cup Dutch process cocoa powder
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2 cups all-purpose flour
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1 teaspoon baking soda
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½ teaspoon salt
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Marshmallow Mint Filling
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½ cup (1 stick) unsalted butter, at room temperature
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1 jar (7 oz) marshmallow creme
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2 cups powdered sugar (confectioner’s sugar)
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1 teaspoon mint extract