1 bunch broccoli, flowerlets
1 head cauliflower, cut in flowerlets
1 red onion, thinly sliced
1 c. mayonnaise
1/2 c. vinegar
1 c. sugar
1/4 c. salad oil
3 tbsp. prep mustard

Mix broccoli and cauliflower flowerets. Add onions and combine other ingredients. Pour over vegetables. Refrigerate 2 hours before serving.