Can you eat oatmeal on the keto diet? 1. Is oatmeal allowed on the keto diet? Oatmeal is generally not recommended on the keto diet due to its high carbohydrate content. One cup of cooked oatmeal contains about 30 grams of carbs, which can easily exceed your daily carb limit on a keto diet. Learn more about oatmeal on the keto diet 2. Why is oatmeal not keto-friendly? Oatmeal is mainly composed of carbs, including dietary fiber and starch. While it provides some vitamins and minerals, it also raises blood sugar levels and can kick you out of ketosis if…