Apple Oatmeal Cookies

Bahan-bahan (12 porsi)

• 1 cup quick-cooking oats
• 3/4 cup whole wheat pastry flour
• 1 1/2 teaspoon baking powder (I recommend aluminum-free)
• 1 1/2 teaspoons ground cinnamon
• 1/4 teaspoon kosher salt
• 1/8 teaspoon ground nutmeg
• 2 tablespoons unsalted butter
• 1 teaspoon pure vanilla extract
• 1 large egg (at room temperature)
• 1/2 cup honey (or substitute pure maple syrup)
• 1 medium firm sweet apple ((such as a Honeycrisp, Gala, or Fuji), peeled, cored, and diced into small pieces (about 1 cup))
• 1/2 cup powdered sugar
• 1/4 teaspoon pure vanilla extract
• 1 -2 teaspoons milk