1 sm. onion, chopped fine
1 c. mayonnaise or salad dressing
1/3 c. salad oil
1/4 c. catsup
2 tbsp. sugar
2 tbsp. vinegar
1 tsp. prepared mustard
1/4 tsp. celery seed
Dash of pepper
1/2 tsp. salt
1/2 tsp. paprika
1 c. crumbled blue cheese

Put all ingredients except cheese in blender. Cover. Blend until smooth. Remove dressing from blender; stir in blue cheese. Cover. Chill. Makes 2 1/2 cups.