since you mentioned you don't have a sweet tooth, i'm assuming you didn't mean 'instant' as in the kind that is flavored, right? you mean 'instant' as in the ingredients are 100% rolled oats, but cut small so that they cook fast? if it's the latter, that is absolutely fine. so long as you're only eating oats, without sugar or milk, you are doing your body good. the only reason i mentioned natural peanut butter was that it keeps you full longer (because of the fat, the good kind) and makes it taste a little better. i also mentioned the banana because it is a way of making the sweeter without adding refined sugar. since you like it plain, you are doing great...but perhaps try cutting down to 1.5 servings? you mentioned trying to lose weight: realize that american portions are far too big, try eating as close to single servings at meals (they call them servings for a reason.) as you can. but, imo, oats that are cut bigger, such as old-fashioned or steel cut, are even better for you because they take longer to break down and have an even lower glycemic index. they rub is that they take longer to cook as well.