I teach them to dress themselves as much as possible shortly after 2, so it's not too bad. They can put on snowpants, and for jackets I lie them out and if the child stands where the head of the jacket is, they lean over, put their arms in and do "up and over". It's a game and they all love putting on their jackets.
I also see it as 15, 20 minutes....however long of time passed! It fills the morning.