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How to Make Subway-Style Sweet Onion Sauce at Home (Easy Recipe)

Subway-Style Sweet Onion Sauce

wiolleta bertan
A sweet, tangy, and slightly spicy sauce that perfectly complements sandwiches, wraps, and salads—just like at Subway!
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Prep Time 5 minutes
Cook Time 5 minutes
Course Condiments, Sauces
Cuisine American
Calories 89 kcal

Ingredients
  

  • - 1 cup granulated sugar
  • - ½ cup + 1 tbsp water
  • - 6 tbsp white vinegar
  • - 4½ tsp red wine vinegar
  • - 1 tsp finely grated onion
  • - 1 tbsp Dijon mustard
  • - ¼ tsp sesame oil
  • - 1 tbsp cornstarch
  • - 1 tbsp dried minced onion
  • - 2 tsp dry mustard powder
  • - 1 tsp salt
  • - ¾ tsp poppy seeds
  • - ½ tsp celery seed
  • - ¼ tsp onion powder
  • - ¼ tsp paprika
  • - ¼ tsp black pepper
  • - ⅛ tsp garlic powder

Instructions
 

  • In a medium saucepan, combine all ingredients and whisk until well blended.
  • Bring to a boil over medium-high heat, whisking frequently.
  • Reduce heat to low and simmer for about 5 minutes, until the sauce thickens.
  • Remove from heat and let cool completely.
  • Store in an airtight container in the refrigerator.

Notes

- Adjust sweetness by adding or reducing sugar.
- Substitute sugar with a keto-friendly sweetener for a low-carb version.
- Store refrigerated for up to 4 weeks.
Keyword Gluten-Free, vegan