Use Your Microwave
To heat sandwiches, prepare as directed. Place on microwavable plate. Microwave on HIGH 15 seconds or until cheese begins to melt.
Onions can be cooked ahead of time. Cover and refrigerate up to 4 hours. Reheat in skillet before adding ham; continue as directed.
Prepare as directed, omitting the butter and using KRAFT 2% Milk Singles. Spray skillet with cooking spray before using.