This oatmeal muffin top features chopped apples and walnuts enrobed in the comforting fall flavors of nutmeg, cinnamon and browns sugar. The bits of tart green apple juxtapose the earthy taste of oats and flax, while the walnuts contribute additional texture and nutritional value. Walnuts are rich in protein and potassium, and contain omega-3 fats and antioxidants. Additional ingredients in this recipe, such as Greek yogurt to reduce butter content, make this biscuit-like treat a healthful alternative to traditional baked goods. Enjoy!