Healthy recipe for Quaker oatmeal packets?
Not sure if this question is off-topic (https://cooking.stackexchange.com/help/on-topic), but I'll respond on the basis that anyone looking for a non-fattening cookie recipe has probably suffered sufficiently already.

Looking on the Quaker site, they have a decent recipe albeit with butter (https://www.quakeroats.com/cooking-and-recipes/vanishing-oatmeal-raisin-cookies). Taking into account the dryness of the oats, you could try amending this and reducing the butter content and replacing that with some egg white until the consistency is close to a traditional recipe.

Another alternative is banana, see https://cafedelites.com/healthy-2-ingredient-breakfast-cookies which is just oats and banana.

Either way, you will probably be able to put something together that resembles a cookie, but for that really luxurious cookie experience, butter, sugar and chocolate are hard to beat.