M&S Count On Us Macaroni Cheese Italian macaroni pasta topped with a cheese sauce and low fat hard cheese. For best results, oven cook. Can also be cooked in the microwave. 347 calories per pack. Serves 1. M&S Count On Us is flavoursome, low calorie food that you can count on to manage a healthy weight. Each freshly prepared meal is under 375 calories. Each dessert is under 180 calories.