Marinated Onion Salad

Prep: 15 min Cuisine: American

A tangy, sweet onion salad with a creamy mayonnaise finish, perfect for light lunches or as a side on lettuce leaves, with vibrant flavors and crisp texture.

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Ingredients

  • 2 medium sweet onions (preferably Vidalia)
  • 1 cup water
  • 1/2 cup sugar
  • 1/4 cup white vinegar
  • 1 1/2 tablespoons mayonnaise
  • 1 teaspoon celery seed

Instructions

  1. Slice onions and separate into rings.
  2. Combine water, sugar, and vinegar; stir until sugar dissolves.
  3. Pour the mixture over the sliced onions.
  4. Cover and chill for at least 3 to 4 hours, then drain.
  5. Stir in mayonnaise and celery seed.
  6. Serve on lettuce leaves.

Tips & Substitutions

For a milder flavor, soak the sliced onions in cold water for 30 minutes before marinating. You can substitute the white vinegar with apple cider vinegar for a different taste. If you prefer a vegan version, replace the mayonnaise with a vegan mayonnaise alternative. Adding a pinch of salt enhances the flavors, so feel free to adjust according to your taste.

Serving Suggestions

This Marinated Onion Salad is delicious served on a bed of lettuce leaves, making for a refreshing side dish. It pairs beautifully with grilled meats or sandwiches, adding a zesty crunch. For a complete meal, consider serving it alongside Beer Bread(Whoa!) and a light soup for a balanced lunch or dinner.

Storage & Reheating

Store any leftovers in an airtight container in the refrigerator for up to one week. The flavors will continue to develop as they sit. To serve, you don’t need to reheat this salad; it’s best enjoyed cold. Just give it a gentle stir before serving to redistribute the dressing.

Nutrition & Diet Analysis (per serving)

Each serving of Marinated Onion Salad contains roughly 81 calories, with 2g protein, 17g carbohydrates, and 1g fat. It is an excellent source of vitamin C (24% of the Daily Value), and a good source of dietary fiber. It also contributes 3g of dietary fiber toward your daily target.

81 kcal 4% DV
Protein Fat Carbs

Macronutrients

Protein 1.6g 3% DV
Total Fat 1.2g 2% DV
Carbs 16.6g 6% DV
Fiber 2.8g 10% DV
Sugar 3.2g 6% DV

Electrolytes

Sodium 34.7mg 2% DV
Potassium 211.7mg 5% DV

Vitamins & Minerals

Vitamin A 1.5mcg
Vitamin C 21.4mg 24% DV
Calcium 29.8mg 2% DV
Iron 0.5mg 3% DV
Diet fit Low-carb Under 400 cal Low-fat
Contains Egg

Estimated from ingredients & per-serving nutrition — verify against package labels for allergies or strict diets.

* % Daily Values based on a 2,000 calorie diet (FDA 2020).

Frequently Asked Questions

Can I use a different type of onion for this salad?

Yes, you can use other types of onions, but sweet onions like Vidalia provide the best flavor. If you use yellow or red onions, consider adjusting the sugar or soaking them longer to mellow their sharpness.

How long can I marinate the onions?

You can marinate the onions for a minimum of 3 to 4 hours, but for the best flavor, consider marinating them overnight. The longer they sit, the more flavorful they'll become, allowing the onions to absorb the vinegar and sugar mixture.

What can I do with leftover marinade?

The leftover marinade can be used as a dressing for salads or as a tangy addition to sandwiches. Just make sure to strain it to remove the onion pieces if desired, and it can also be used to pickle other vegetables for a quick side dish.

Nutrition is estimated from USDA FoodData Central ingredient data and may vary with brand, portion and preparation — see our methodology. This information is for general educational purposes only and is not medical or dietary advice (disclaimer).

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