3
Tbsp olive oil 12 oz sliced mushrooms 1 1/2 c prechopped celery and onion (6 oz) 10 oz baby spinach 2 c marinara
sauce 24 oz prepared
plain or sun - dried
tomato and garlic polenta *, cut into 24 slices (1/4» - thick) 2 oz part - skim mozzarella, shredded (1/2 c)