"A festive holiday dessert with chocolate cookies and a marshmallow peppermint filling...."
INGREDIENTS
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3 cups sugar
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1 cup softened, plus 1 1/2 cups for filling unsalted butter
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4 large room temperature eggs
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1/2 cup vegetable oil
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1 tablespoon vanilla
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6 1/2 cups all purpose flour
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2 cups unsweetened cocoa powder
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1 1/2 tablespoons baking soda
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1 teaspoon baking powder
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1 1/2 teaspoons divided salt
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3 cups plus 4 tablespoons, divided milk
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1 1/2 cups vegetable shortening
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9 cups confectioner's sugar
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4 cups marshmallow creme
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1 teaspoon peppermint extract
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1 lb hard peppermint candies