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Subway Sweet Onion Sauce Recipe

Subway Sweet Onion Sauce Recipe


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4.8 from 17 reviews

  • Total Time: 15 minutes
  • Yield: 12 1x

Description

Subway’s sweet onion sauce elevates sandwiches with its signature tangy-sweet profile. Creamy, zesty condiment brings restaurant-quality flavor home, letting you drizzle restaurant magic onto homemade creations.


Ingredients

Scale

Main Sweeteners and Liquids:

  • 1 cup sugar
  • 1/2 cup water
  • 6 tablespoons white vinegar
  • 1 1/2 tablespoons red wine vinegar

Thickening and Binding Agents:

  • 1 tablespoon cornstarch
  • 2 teaspoons Dijon mustard
  • 2 teaspoons mustard powder

Spices and Seasonings:

  • 1/2 tablespoon finely minced onion
  • 1 teaspoon poppy seeds
  • 1/2 teaspoon sesame oil
  • 1/2 teaspoon onion powder
  • 1/2 teaspoon salt
  • 1/4 teaspoon garlic powder
  • 1/4 teaspoon celery seed
  • 1/4 teaspoon paprika
  • 1/4 teaspoon black pepper

Instructions

  1. Combine all ingredients in a medium saucepan, using a whisk to blend thoroughly and eliminate any potential lumps.
  2. Place the saucepan over medium-high heat, stirring continuously as the mixture begins to heat and gradually reaches a rolling boil.
  3. Maintain constant whisking during the boiling phase to ensure smooth consistency and prevent ingredient separation.
  4. Allow the sauce to boil vigorously for approximately 5 minutes, watching for gradual thickening and reduction of liquid volume.
  5. Reduce heat to low, continuing to stir and simmer the sauce for an additional 5 minutes until it reaches a rich, glossy texture.
  6. Remove the saucepan from heat source and let the sauce cool completely at room temperature, which will further enhance its thickness.
  7. Once cooled, carefully transfer the sauce into a clean, sealed glass container with an airtight lid.
  8. Refrigerate the sauce, where it will remain fresh and flavorful for up to one week, ready to enhance sandwiches, salads, or other dishes.

Notes

  • Customize the sweetness by adjusting the sugar levels to match your taste preferences.
  • For a healthier version, replace regular sugar with honey or a low-calorie sweetener like stevia.
  • Whisk continuously to prevent burning and ensure a smooth, silky texture throughout the cooking process.
  • Store the sauce in a glass container to maintain its fresh flavor and prevent any plastic-related taste contamination.
  • Prep Time: 5 minutes
  • Cook Time: 10 minutes
  • Category: Lunch, Dinner, Appetizer
  • Method: Simmering
  • Cuisine: American

Nutrition

  • Serving Size: 12
  • Calories: 36
  • Sugar: 8 g
  • Sodium: 35 mg
  • Fat: 0 g
  • Saturated Fat: 0 g
  • Unsaturated Fat: 0 g
  • Trans Fat: 0 g
  • Carbohydrates: 9 g
  • Fiber: 0 g
  • Protein: 0 g
  • Cholesterol: 0 mg