You want low GI foods so the energy is released slower so you won't get as hungry as quick. Foods such as: porridge, pasta, rice, spaghetti, noodles, different types of beans, milk stuff like that. Also in this lecture the other day we watched this video were 3 different people were fed pasta with protein (chicken), fat (some creamy sauce) and just pasta and the person who had chicken stayed the fullest for longer. So try and eat a bit of meat too Edit - Also ready brek is just as good as the oats stuff just more expensive and it might have some added salt or sugar, you could always add some treacle or sugar too if it gets boring