INGREDIENTS
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For the cookies:
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1½ cups all-purpose flour
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2 tablespoons natural unsweetened cocoa powder
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1 teaspoon baking soda
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¼ teaspoon baking powder
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¼ teaspoon table salt
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1 cup sugar
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8 tablespoons (1 stick) unsalted butter, softened
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1 large egg
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1 tablespoon red liquid food coloring
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For the filling:
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2 cups confectioners’ sugar
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½ cup vegetable shortening
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8 tablespoons (1 stick) unsalted butter, softened
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1 tablespoon hot water
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½ teaspoon vanilla extract