Pumpkin Cookies with Brown-Butter Icing

INGREDIENTS

• :
• 2¾ cups all-purpose flour
• 1 teaspoon baking powder
• 1 teaspoon baking soda
• 1¼ teaspoons kosher salt
• 1½ teaspoons ground cinnamon
• 1¼ teaspoons ground ginger
• ¾ teaspoon ground nutmeg
• ¾ cup (6 ounces) unsalted butter, at room temperature
• 2¼ cups light brown sugar
• 2 eggs, at room temperature
• 1½ cups canned pumpkin
• ¾ cup half-and-half
• 1 teaspoon vanilla extract
• 4 cups powdered sugar
• 10 tablespoons unsalted butter
• ¼ cup plus 1 tablespoon half-and-half
• 2 teaspoons vanilla extract