When I eat Oatmeal and fruit in the morning (8ish)
I usually get my lunch break at 12pm.. I feel like I can NOT eat anything until maybe 2, so I usually eat at my desk around that time and Oatmeal completely throws me off but keeps me really full in the morning.
Now salads, (lettuce, spinach, mushrooms, carrots, balsamic vinegar, and some type of protein) hardly ever keep me full. Usually because it has very little protein.