1 head cauliflower, cut up
1 bunch broccoli, cut up
2 sm. onions, sliced and separated in rings

Combine vegetables in large bowl.

DRESSING:

1/2 c. mayonnaise
1/3 c. oil
1/3 c. vinegar
1/4 c. sugar
1/2 tsp. salt
1/4 tsp. pepper

Add dressing to vegetables. Chill several hours or overnight, tossing occasionally.