Onion Salad Dressing 2

1/2 cup of finely chopped onion
1/4 cup of cider vinegar
1/4 cup of sugar
1/2 teaspoon of salt
1/2 teaspoon of dry mustard
1/4 teaspoon of celery seed
1/2 cup of oil

Combine all of the ingredients, except oil, in blender, mix well, stopping as necessary to scrape down sides of container. With blender running, gradually pour in oil, blending until dressing is creamy. Transfer to container with tight fitting lid and refrigerate before using. Whisk or shake, if dressing separates on standing.
Makes 1 cup

Onion Salad Dressing 3

1/4 cup of vinegar
3/4 cup of sugar
1/2 teaspoon of dry mustard
1/4 whole onion, or green onions
1/4 teaspoon of salt
1 cup of corn oil
1/2 teaspoon of celery seed

Blend in blender for 10 minutes. 

Onion Salad Dressing 4

1 cup of salad oil
1/2 cup of white vinegar
3/4 cup of sugar
1 teaspoon of salt
1 teaspoon of dry mustard
1 teaspoon of celery seed
1 medium onion, grated

Mix salad oil, sugar, salt, mustard, and onion with beater. Beat and add vinegar. Slowly beat until thickened. Serve over coleslaw.

Onion Salad Dressing 5

2 cups of salad oil
2 cups of white sugar
2 teaspoons of salt
2 teaspoons of  dry mustard
1 small onion
1 cup of  white vinegar
2 teaspoons of  celery seed

Combine first five ingredients in blender on high speed. Add vinegar slowly. Blend until thick. Add celery seed last.