I am one of the few people who are allergic to onions, so I usually leave them out. Sloppy Joe's was one of the things I could not eat for a very long time because that canned stuff has onion and green pepper in it. You can omit the cheese if you wish but it is how I have eaten them since forever! It is sooo good! I always have to make a double batch for my family because we all love this and there is usually very little left!