This is a healthy way to add a little flavor to chicken without all the fat, and just a little salt. You can substitute or add any vegetable that sautes well if you don't like onions, but the mushrooms are a must. Pairs well with steamed veggies and/or rice. You could add a little cornstarch slurry while the liquid reduces to help thicken the sauce, but I like to keep it on the light side. Using a lid on the non-stick skillet is a key step to the recipe. It keeps the Chicken from drying out.