Baked Salmon(or chicken) with Tomatoes, Spinach, and Mushrooms

4 Salmon fillets (4 oz each)
2 cups sliced mushrooms
1 med. tomato chopped
1/3 cup sun dried tomato vinaigrette dressing.Place salmon fillets skin side down in a 9x13 baking dish sprayed with cooking spray. Mix remaining ingredients until well blended spoon over salmon. Bake at 375 for 20-25 min or until salmon flakes with a fork.