INGREDIENTS
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1 cup Gluten-Free All-Purpose Flour Mix (or substitute all-purpose flour)
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1/2 cup unsweetened cocoa powder?
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1/2 teaspoon baking powder?
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1/2 teaspoon baking soda
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1/2 teaspoon salt?
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3/4 cup granulated sugar
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2 1/2 ounces (5 tablespoons) shortening (or substitute butter), at room temperature?
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1 large egg plus 1 large egg yolk, at room temperature
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1 teaspoon vanilla extract
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3/4 to 1 teaspoon peppermint extract, depending on how minty you like your Thin Mints
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Confectioners’ sugar, for dusting
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12 to 16 ounces semisweet chocolate, such as Guittard or Callebaut, finely chopped