"Here's exactly how to make homemade thin mint cookies using a simple from-scratch cookie dough recipe with cocoa powder, real chocolate, and peppermint...."
INGREDIENTS
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3/4 cup (172g) unsalted butter, softened to room temperature
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1 cup (200g) granulated sugar
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1 large egg, at room temperature
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1 teaspoon pure vanilla extract
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1/4 teaspoon peppermint extract*
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1 and 1/2 cups (188g) all-purpose flour (spoon & leveled)
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3/4 cup (63g) unsweetened natural cocoa powder (or dutch process)
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1 teaspoon baking powder
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1/8 teaspoon salt
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14 ounces (395g) quality semi-sweet chocolate, coarsely chopped
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1/2 teaspoon canola or vegetable oil
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1/4 teaspoon peppermint extract*