The phrase "more oatmeal" can be replaced with a variety of synonyms depending on the context. If someone is requesting an additional serving of oatmeal at breakfast, they could ask for "another bowl of oatmeal" or "some more porridge." For someone who wants to add more oatmeal to a recipe, they may say "extra oats" or "additional rolled oats." Perhaps someone is trying to increase their fiber intake and wants to eat more oatmeal throughout the day, in which case they may use synonyms such as "increased oatmeal consumption" or "higher oatmeal intake." Whatever the situation, there are plenty of ways to express the desire for more oatmeal!