"Chocolate cupcakes filled with marshmallow fluff and topped with a rich whipped cream frosting. Hot cocoa brought to life in a cupcake!..."
INGREDIENTS
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1 cup all-purpose flour
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6 tablespoons unsweetened cocoa
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1/2 teaspoon baking soda
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1/4 teaspoon baking powder
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1/4 teaspoon salt
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8 tablespoons unsalted butter, softened
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1 cup sugar
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2 eggs, at room temperature
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1 large egg yolk, at room temperature
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1/2 teaspoon vanilla
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1/2 cup boiling water
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about 1 + 1/2 cups marshmallow fluff
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1 pint heavy whipping cream
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1 cup confectioners' sugar
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chocolate shavings for garnish, optional