Healthy Cinnamon Apple Oatmeal Muffins — only 120 calories & so easy to make! They’re really moist & tender, plus they’re perfect for meal prepping breakfasts & snacks! I make these all the time. SO good!! ♡ best healthy greek yogurt oatmeal muffins recipe. clean eating low calorie oatmeal muffins. no sugar oatmeal muffins with whole wheat and gluten free options.