Sugar Content of 50 Popular Breakfast Cereals | Stacker The Coco-Roos cereal from Malt-O-Meal will provide you with 11 grams of sugar per each 3/4 cup serving (via both sugar and corn syrup), in addition to less than one gram of protein. Overall, Coco-Roos has 51% more sugar than the average breakfast cereal, and also have artificial flavors and colors. 48 / 50.