Maple Cookie – 1 cup (226 g) unsalted butter – 2½ cups (300 g) all purpose flour – 1 teaspoon cornstarch – 1 teaspoon baking powder – ¼ teaspoon baking soda – ½ teaspoon salt – ¾ cup (150 g) light brown sugar – ½ cup (100 g) granulated sugar – ¼ cup (49 ml) maple syrup – 1 large egg, room temperature – 1 large egg yolk, room temperature – 1 teaspoon (5 ml) vanilla extract – 1 teaspoon maple extract Cinnamon Sugar – ¼ cup (50 g) granulated sugar – 1½ teaspoons ground cinnamon Maple Glaze – 1 cup (120 g) powdered sugar, sifted – 3 - 4 tablespoons (45 - 60 ml) maple syrup – 1 - 2 tablespoons (15 - 30 ml) melted butter