It's really hard to go wrong with bbq, mushrooms, and melty cheese. This one didn't disappoint. I made as written except we don't have a grill so I just cooked the onions and mushrooms together...
The sauce turns to liquid and when its done there is none left on the chicken. End result is a bland, and as usual, dry chicken breast. Mushrooms, cheese, and onions were good though!
Made as written, family loved it! Nice to have a different type of chicken that is grilled!