Depending on where you're from, you may see cube steak labeled as cubed steak, minute steak or swiss ... Place the onions into a lightly sprayed 9x13 pan, instead of your slow cooker.
(You may need to brown the meat in batches.) Tip the browned meat into the slow cooker. Heat the remaining oil in a frying pan and fry the onions for 5 minutes, then add the garlic, chilli and ...