1 med. head cauliflower or 1 lg. or 2 sm. pkgs. frozen
2 c. broccoli flowerets
1 pkg. frozen green peas
2 tbsp. chopped onion
1 c. mayonnaise or salad dressing
1/2 c. sour cream
1 tsp. sugar
1/2 tsp. salt
1/2 tsp. garlic salt (optional)

In large bowl, combine vegetables. In small bowl, blend rest of ingredients. Pour over vegetables. Mix well. Cover and chill overnight.