1 cup of uncooked oatmeal has to be what, 100g? That is almost an entire's day of carb intake if you are cutting
But even if not cutting, that's a HUUUUUUUUUGE insulin spike (oatmeal spikes blood sugar more than just about everything).
If you are Halo and are in major gain mode then you can get away with it, but otherwise I'd cut it back a bit.
But if you are in 'normal' gain mode, and need a big breakfast with calories, cut it down to like 30g uncooked, add some coconut milk, and have some eggs and a protein shake on the side, and a spoon of fish oil. Same calories, but more useful - good fat, protein - and longer lasting energy, and less insulin spike.