Name: Subway Sweet Onion Sauce
Prep time: 5 min
Cook time: 10 min
Total time: 15 min
Cuisine: American
Ingredients: 1 cup sugar – for sweetness; 1/2 cup water – to dissolve the sugar; 6 tablespoons white vinegar – adds tanginess; 1 1/2 tablespoons red wine vinegar – for an extra depth of flavor; 1/2 tablespoon finely minced onion – adds a mild onion taste; 1 tablespoon cornstarch – to thicken the sauce; 2 teaspoons Dijon mustard – for a little tang and spice; 2 teaspoons mustard powder – deepens the mustard flavor; 1 teaspoon poppy seeds – for texture and flavor; 1/2 teaspoon sesame oil – adds a subtle nutty flavor; 1/2 teaspoon onion powder – enhances the onion flavor; 1/2 teaspoon salt – to season; 1/4 teaspoon garlic powder – to round out the flavors; 1/4 teaspoon celery seed – adds complexity; 1/4 teaspoon paprika – for mild heat and color; 1/4 teaspoon black pepper – for a little heat

Description

This Subway Sweet Onion Sauce is the perfect tangy, sweet, and savory addition to your sandwiches or salads. Made with a mix of onions, mustard, and vinegar, it’s a deliciously flavorful homemade version of the beloved Subway sauce! Ready to elevate your next meal?

Ingredients

Scale

1 cup sugar – for sweetness
1/2 cup water – to dissolve the sugar
6 tablespoons white vinegar – adds tanginess
1 1/2 tablespoons red wine vinegar – for an extra depth of flavor
1/2 tablespoon finely minced onion – adds a mild onion taste
1 tablespoon cornstarch – to thicken the sauce
2 teaspoons Dijon mustard – for a little tang and spice
2 teaspoons mustard powder – deepens the mustard flavor
1 teaspoon poppy seeds – for texture and flavor
1/2 teaspoon sesame oil – adds a subtle nutty flavor
1/2 teaspoon onion powder – enhances the onion flavor
1/2 teaspoon salt – to season
1/4 teaspoon garlic powder – to round out the flavors
1/4 teaspoon celery seed – adds complexity
1/4 teaspoon paprika – for mild heat and color
1/4 teaspoon black pepper – for a little heat

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Instructions

Combine Ingredients: Add all the ingredients to a saucepan and whisk thoroughly to combine.
Boil the Mixture: Bring the mixture to a boil, whisking constantly to prevent clumping.
Simmer the Sauce: Let it boil for 5 minutes, then reduce the heat to a simmer. Continue whisking for an additional 5 minutes.
Thicken: Once the sauce thickens, remove it from heat and let it cool completely.
Store: Transfer the sauce to an airtight container and store in the refrigerator for up to one week.

Notes

This sauce can be stored in the fridge for up to 7 days, so you can make it ahead of time and have it ready for multiple meals!
You can adjust the sweetness or tanginess by altering the sugar or vinegar amounts according to your personal taste.
This sauce works great not only on sandwiches but also as a dipping sauce for snacks like chicken nuggets or fries.

Nutrition

Serving Size: 1 tablespoon
Calories: 40
Sugar: 10g
Sodium: 85mg
Fat: 0g
Saturated Fat: 0g
Unsaturated Fat: 0g
Trans Fat: 0g
Carbohydrates: 11g
Fiber: 0g
Protein: 0g
Cholesterol: 0mg