1 head broccoli
1 head cauliflower
1 jar button mushrooms
1 lg. red onion
1 (12 oz.) bottle Italian dressing

Break up broccoli and cauliflower into bite size pieces. Chop onion finely. Mix mushrooms (drained) with broccoli, cauliflower and onion. Pour in Italian dressing. Toss to coat all pieces well. Cover and refrigerate.