In a mini food processor {or blender} I blended 2 tablespoons of balsamic vinegar, 1 teaspoon olive oil, garlic, basil and water.
Fill the bottom of a casserole dish with the chicken, adding the mushroom and onion mixture and top with tomatoes. Add salt and pepper to taste then pour the balsamic mixture over the chicken and dust with cheese. Bake for 20 minutes or until tomatoes are wilted.
Cauliflower rice makes a great alternative to rice.
Notes
Serve with your choice of rice or riced cauliflower.