These Low Calorie Mac and Cheese Cups are just 66 calories and perfect for meal prep sides, or potluck dishes. At just 66 calories, you could have just one as a side dish, or have 3-4 as a main dish. Special Tip: The secret "weapon" in this low calorie recipe is the Fiber Gourmet Light Elbow Pasta. I have included a link below so you can get a visual pop it before heading to the store, or just purchase on line.