Pumpkin Cookies with Brown Butter Icing

INGREDIENTS

• 2 3/4 cups all-purpose flour
• 1 teaspoon baking powder
• 1 teaspoon baking soda
• 1 1/4 teaspoons coarse salt
• 1 1/2 teaspoons ground cinnamon
• 1 1/4 teaspoons ground ginger
• 3/4 teaspoon ground nutmeg
• 3/4 cup (1 1/2 sticks) unsalted butter, softened
• 2 1/4 cups packed light-brown sugar
• 2 large eggs
• 1 1/2 cups canned solid-pack pumpkin (14 ounces)
• 3/4 cup evaporated milk
• 1 teaspoon pure vanilla extract
• 4 cups confectioners' sugar, sifted
• 10 tablespoons (1 1/4 sticks) unsalted butter
• 1/4 cup plus 1 tablespoon evaporated milk
• 2 teaspoons pure vanilla extract