What is the cereal that has the highest fat of them all?

The cereal with the highest fat content is often considered to be granola, particularly those varieties that include added oils, nuts, or seeds. Some granola brands can have around 10-15 grams of fat per serving, significantly more than traditional breakfast cereals, which usually have lower fat content. Always check the nutrition label for specific products, as fat content can vary widely among different brands and flavors.