1. Preheat the oven to 375°F (190°C) with racks in the top and bottom thirds of the oven. Butter 2 large baking sheets or line with parchment paper.
2. In a large bowl, whisk together oats, flour, cinnamon, baking powder, and salt. In another bowl, whisk together sugar, eggs, milk, butter, and vanilla. Pour over dry ingredients and sprinkle with apples; stir until just blended.
3. Drop batter by 1/4 cup (60 mL) for each cookie onto prepared baking sheets at least 2 inches (5 cm) apart. Bake for about 15 minutes, switching pans on racks halfway or until a tester inserted in the center comes out clean. Let the cookies cool on pans for 2 minutes, then transfer to racks to cool completely.
Recipe and photo are provided by Dairy Farmers of Canada. For more recipe ideas, visit dairygoodness.ca.