Sweet Onion Dressing.

Sweet onion dressing has a mild, sweet onion flavor that goes perfectly with a fresh salad!

Salad is not exactly my love language, so you know when I say love a salad with this beautiful sweet onion dressing, it’s something to get excited about! Sweet with a little vinegary kick and a mellow onion taste, it’s perfect for drizzling on tender greens or crisp lettuce. It adds a ton of flavor without being heavy, and is a fresh, fun change of pace if you’re in a salad rut. I especially love it paired with savory toppings, like grilled chicken, toasted nuts, cheese, bacon (duh), or crispy fried onion strings (or…all of the above?)!

Sweet onion dressing has a mild, sweet onion flavor that goes perfectly with a fresh salad!

(Y’all. I wish you could have seen me juggling the camera and the spoon while trying to show the consistency of this dressing – I’m a mess. Send help. Or, I mean, I meant to dump dressing down the side of the jar. #artsy)

It’s amazingly easy to make – everything goes into the blender and gets whirled into a smooth, light dressing (the consistency is closer to a creamy vinaigrette than something thicker, like ranch). I put it in a mason jar or wash and reuse an old dressing bottle, and it keeps forever in the fridge!

Sweet onion dressing has a mild, sweet onion flavor that goes perfectly with a fresh salad!

The sweet onion dressing recipe came to me from my mom, who got it from my sister, who got it from a friend at church who always brought a very popular big salad with this dressing to church potlucks! So yes, this is famous salad you’re about to eat. The dressing is great on a simple green salad as a side to any dinner meal, and it’s so good as the finishing touch on a big salad with lots of savory toppings for that sweet/salty combination. I hope you love it!

Sweet Onion Dressing.

Prep Time: 10 minutes

Total Time: 10 minutes

Yield: 2 cups of dressing


  • 3/4 cup canola oil (or other neutral oil such as avocado oil)
  • 3/4 cup sugar
  • 1/4 cup chopped onion
  • 1/4 cup white vinegar
  • 1/4 cup water
  • 1 heaping Tablespoon mayonnaise
  • 1 Tablespoon yellow mustard
  • 1 teaspoon celery seed
  • 1/4 teaspoon salt


Add all ingredients to a powerful blender, such as a Ninja or Vitamix. Mix on high speed for 30 seconds, making sure that the sugar gets completely dissolved and the onions pieces are smoothly blended. Transfer the dressing to a jar (or wash and reuse an old dressing bottle for easy pouring!), and shake or stir before using.


The finished dressing fits perfectly in a pint Mason jar! It keeps for weeks in the fridge.


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  1. My mouth is watering just thinking about this dressing! I love it so!

    1. You know if salad dressing can do that, it’s worth at least trying!! 😉

  2. I seriously cannot wait to make this!!!! I have been wanting to find a recipe like this but haven’t taken the time to look for one! So excited. Making this next week for sure. What types of onions do you use?

    1. Oh, yay! I’ve used a yellow onion and a white onion and I couldn’t tell a difference! I hope y’all love it!

  3. I’m kinda bored with salads this far into summer . This salad dressing sounds like it could perk up som ho-hum greens in a jiffy.

    1. Bettie! It’s so true – I need salad to be exciting or I just ignore the greens in my fridge until they turn to slime! 😉 Please let me know if you give this a try!

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