Cut cheese (or tofu) into ½" cubes and marinate for a couple of hours or overnight in zesty Italian salad dressing.
Use only the flower parts of the broccoli and quarter them into small bite sizes. Slice the red onion with that State Fair slicer into separated rings about ¼" thick. Rinse the mushrooms, dry and mix with broccoli and onion rings. Make the dressing and spoon it over the mix of broccoli, mushrooms and red onion. Be gentle. Pour just enough to lightly coat the veggies. Pour excess Italian dressing off the mozzarella cheese. Add cheese and Bac-O's to salad and mix thoroughly. Serve immediately. Do not add dressing ahead of time.