This is another combination of recipes.Update: 8/10/2008 - One time saver I can think of is to buy your onions already sliced, muchrooms caps, and make bacon ahead of time(keep in airtight container for 1 day)
In a 10" nonstick skillet, melt butter & crushed red pepper flakes(if using) over medium high heat and cook onions; uncovered stirring occasionally, 15 minutes or until onions are golden. (if desired add a bit of brn sugar & it will help the onions caramelize).
Remove onions from skillet and keep warm.
Sprinkle with garlic powder.
In same skillet melt 1 tablespoon butter over medium-high heat and cook chicken 4 minutes or until chicken is throughly cooked, turning once.
In same skillet, melt remaining butter over medium heat and brown mushrooms for about 6 minutes, till all water is absorbed.
To serve, arrange chicken on 1/2 bread, then top with hot onions, mushrooms, cheese and bacon.
Bake at 375ºF for 5 minutes or until cheese is melted.
Top with remaining bread.
To serve, cut in half.
Sprinkle with thyme and, if desired, salt and ground black pepper, to taste.