Subway™ Sweet Onion Sauce (Copycat)

Now Make This Famous Sauce at Home for Sandwiches, Salads, or as a Dipping Sauce

It’s the sauce that makes Subway™ sandwiches stand out from one another. Don’t you agree? This sauce is the key ingredient in the Subway™ Sweet Onion Chicken Teriyaki Sandwich, one of Subway’s biggest product rollouts. Made with common ingredients like teriyaki glazed chicken breast strips, onions, lettuce, tomatoes, green peppers, and olives, what sets it apart from all other teriyaki chicken sandwiches is the Sweet Onion Sauce. Not for sale at any Subway store or in a grocery store, now you can pour your own homemade version of the sauce on your sandwich masterpieces when you want.

Use this sauce on your favorite salads or sandwiches. It’s a great-tasting alternative to mayonnaise. Glazing and basting meats with this sauce will give your meal a definite thumbs-up from family and friends. Grilling chicken breasts slathered with Sweet Onion Sauce is nirvana. Try a Sweet-n-Sour dish with this sauce instead of the standard sauce. The only complaint I have ever received is that my friends wanted a lot more sauce!

Sweet Onion Sauce

Makes about 1 cup

1 cup granulated sugar
1/2 cup cold water
1/4 cup red wine vinegar
1 tablespoon balsamic vinegar
1 tablespoon arrowroot starch or corn starch
2 tablespoons dried, minced onion
2 tablespoons brown sugar
2-1/2 teaspoons mustard powder
1 teaspoon lemon juice or 1/4 teaspoon lemon powder
3/4 teaspoon poppy-seed
3/4 teaspoon celery powder
1 teaspoon onion powder
1/4 teaspoon garlic powder
1/4 teaspoon smoked paprika
1/4 teaspoon freshly ground black pepper


  1. Whisk all ingredients together in a small saucepan.
  2. Bring mixture to a boiling while whisking constantly.
  3. Reduce heat to low simmer, stirring until thickened and flavorful, about 5 minutes.
  4. The sauce will thicken further as it cools. Let the mixture cool thoroughly before covering with a lid.
  5. Allow to cool, then refrigerate in a sealed container for up to 2 months.

©2017 21st Century Simple Living

Leave a Reply