1 (1 lb.) can cut green beans
1/2 med. onion, thinly sliced and separated
1 (3 oz.) can drained mushrooms
1/2 c. Italian salad dressing
1/4 tsp. salt
1/4 tsp. pepper

Place beans, onions, and mushrooms in bowl. Add dressing and seasonings. Toss. Marinate at least 2 to 3 hours, preferably overnight.