Healthy Baked Oatmeal Cups 6 Ways - These are great to make . 2 teaspoons orange zest; 2 teaspoons orange juice; 1/2 cup chopped walnuts, optional .. I don't use anything other than fresh fruit to sweeten oatmeal. Healthy baked oatmeal naturally sweetened with maple syrup or honey! fresh or frozen blueberries (or 2 ½ cups of your preferred berry/fruit. And even though it's technically fruit-on-the-bottom baked oatmeal, I couldn't resist I recommend one that is sweetened with fruit juice only. 1/2 cup fresh blueberries; 1/2 cup blueberry jam homemade or store-bought . snacks and treats that are secretly healthy under their sweet dessert disguises!