Preparation / Directions:
Melt 2 tablespoons butter in microwave dish.
Microwave chicken breasts 3 minutes (cover dish with plastic wrap).
Put sliced mushrooms on top of the chicken, cover again and microwave another 2 minutes.
Check chicken to make sure it's done. Depending on the thickness of the breasts, you may need to microwave another 1 to 3 minutes.
When the chicken is no longer pink, top with cheese and onions, do not cover, and microwave another 2 minutes or until the cheese looks melty.
ENJOY!!! (Also heats up well for leftover