Hi psych laps,You could try sprinkling them with a little salt this would remove some of the juices. Items wont brown until all the moisture has been removed. It is the same as making toast as that will not brown until dry. When trying to brown your cut onions,drain them well and use slightly more oil and make sure all the onions are coated in the oil. Do not put a lid on the pan or they will only steam and produce more moisture defeating the object. If you do decide to fry them using more oil,you have to watch them very carefully as the will turn black in a heartbeat. One trick chefs that you can try is slice or chop some normally without a machine and colour them add them to your other onions when softened the browned onions tricks the eye and will give the appearance that they are all browned. This method will also work with nuts like almonds which will also turn very quickly.Sometimes it is better just to give thie appearance that they are browned than to try and wait until the are all really browned and risk losing the lot if they burn. I hope this helps,all the best.Rab