Subway Sweet Onion Sauce (Copycat) Recipe

Name: Subway Sweet Onion Sauce (Copycat)
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 1 cup granulated sugar (plus 2 tablespoons); 1/2 cup plus 1 tablespoon cold water; 6 tablespoons white vinegar; 1 1/2 tablespoons red wine vinegar; 1 tablespoon arrowroot; 1 tablespoon minced onion flakes; 2 1/2 teaspoons Dijon mustard; 2 1/2 teaspoons mustard powder; 3/4 teaspoon celery salt; 3/4 teaspoon fresh onion juice (use a garlic press); 3/4 teaspoon poppy seed; 1/2 teaspoon onion salt; 1/4 teaspoon garlic salt (plus 1/8 teaspoon); 1/4 teaspoon paprika (plus 1/8 teaspoon); 1/4 teaspoon black pepper (plus 1/8 teaspoon); 1 -2 drop sesame oil

Servings: persons

1 cup granulated sugar (plus 2 tablespoons)
1/2 cup plus 1 tablespoon cold water
6 tablespoons white vinegar
1 1/2 tablespoons red wine vinegar
1 tablespoon arrowroot
1 tablespoon minced onion flakes
2 1/2 teaspoons Dijon mustard
2 1/2 teaspoons mustard powder
3/4 teaspoon celery salt
3/4 teaspoon fresh onion juice (use a garlic press)
3/4 teaspoon poppy seed
1/2 teaspoon onion salt
1/4 teaspoon garlic salt (plus 1/8 teaspoon)
1/4 teaspoon paprika (plus 1/8 teaspoon)
1/4 teaspoon black pepper (plus 1/8 teaspoon)
1 -2 drop sesame oil

1
WHISK sauce ingredients together in a small saucepan (1 cup plus 2 tablespoons granulated sugar, 1/2 cup plus 1 tablespoon cold water, 6 tablespoons white vinegar, 1 1/2 tablespoons red wine vinegar, 1 tablespoon arrowroot powder, 1 tablespoon minced onion flakes, 2 1/2 teaspoons Dijon mustard, 2 1/2 teaspoons mustard powder, 3/4 teaspoon celery salt, 3/4 teaspoon fresh onion juice, 3/4 teaspoon poppy seeds, 1/2 teaspoon onion salt, 3/8 teaspoon garlic salt, 3/8 teaspoon paprika, 3/8 teaspoon black pepper, 1-2 drops sesame oil).
2
BRING mixture to a boiling while whisking constantly.
3
REDUCE heat to low simmer, stirring until thickened and flavorful, about 5 minutes.
4
ALLOW to cool, then refrigerate in a sealed container (keeps indefinitely).
5
SERVE as a dressing for sandwiches or salads and enjoy!

427

kcal

Calories

Fat

Carbs

Fat Carbs

* Per serving · 4 servings · Values may vary.

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Taste as you go and adjust the seasoning before serving.
Avoid overcrowding the pan — cook in batches if needed for the best texture.
Let the dish rest for a few minutes before serving so the flavors settle.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

Brown sugar instead of white sugar adds a deeper, more caramel-like flavor.

No specific allergen information. Please check the ingredient list for possible allergens.

My Personal Notes

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How did you like this recipe?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

You need 16 ingredients. The key ingredients include: 1 cup granulated sugar (plus 2 tablespoons), 1/2 cup plus 1 tablespoon cold water, 6 tablespoons white vinegar, 1 1/2 tablespoons red wine vinegar, and more.

Yes, Subway Sweet Onion Sauce (Copycat) falls under the General category and is a great choice for this type of meal.

Store leftovers in an airtight container in the refrigerator for up to 3–4 days. Reheat gently before serving.

That's it — enjoy your meal!

Subway Sweet Onion Sauce (Copycat)

Tips for the best results

Variations & substitutions

My Personal Notes

How did you like this recipe?

Frequently Asked Questions