Easy Sweet Onion Sauce Recipe [Video] - Masala Herb (2024)

Sweet Onion Sauce is my take on the onion sauce that you get at Subway.

I have modified the sauce so that it can be used beyond subs and sandwiches.

🔪 How to use the Onion Sauce?

The fake Subway Sweet Onion Sauce can also be used as a dipping sauce.

As part of a salad dressing, as well as in soups and sauces with meals, as it adds easily flavors to dishes.

I call my Subway Sweet Onion Sauce a fake copycat recipe because it's used as a topping for subs.

Besides that, I have modified the ingredients used and the looks to make it rather mild but smooth as well and not that dominating.

Therefore, this sauce can be used for other dishes as well and its uses are not limited anymore!

The popular Sandwich food chain Subway uses (most probably) dark vinegar such as balsamic vinegar to add the strong sub-flavors.

I, on the other hand, use Rice Vinegar to give it a subtle feel so that the vinegar doesn't overpower the mild white onions.

🧅 Sweet Onion Sauce Ingredients

Sweet Onion Sauce Ingredients include only fresh ingredients and is prepared with a natural preservation technique.

Vinegar and Sugar help to preserve the Sauce.

White Onions

Pick a sweet, young and small variety of white onions.

Those tend to be milder but turn out more flavorful as well.

Garlic

You can't skip the garlic, it adds flavors and helps the sauce to preserve.

Sugar

You can choose between regular sugar or brown sugar if you feel adventurous.

Vinegar

A very important element of the sweet onion sauce.

Pick a white mild vinegar such as rice vinegar or regular distilled vinegar.

Or use a 50:50 mixture of balsamic vinegar and apple cider vinegar for stronger flavors to mimic the copycat Subway onion sauce all the more.

Seasoning

Salt and Black Pepper for the flavor, and the Pepper add some texture too because the sauce is translucent.

Corn Flour Slurry

A slurry is a mixture of cornflour and water to thicken the sauce.

Lime Juice

The Lime Juice ads a fresh touch to the juice and it rounds up all the flavors in the sauce.

❓ How to make it?

To prepare this sandwich sauce is fairly simple.

Follow the steps easily to make a fresh batch of sweet onion sauce at home.

Step 1

Blend peeled onions + garlic with water smooth.

Step 2

Cook onion blend with vinegar, sugar, and seasoning.

Step 3

Create a slurry with cornflour and water and mix into the sauce. Mix in lemon juice, store in a jar.

🍱 Storing

As you can see, you don't need special bottles to store this sweet onion sauce.

I like to store my sauces in bottles but if I am out of bottles but need sauce (and that turns into a craving) I am bound to just prepare my sauce and store it in clean sterilized regular jam jars.

No judgment and it does the job as well!

So you can just grab your usual jars which you use to make jam and fill it up with the sauce.

To take out sauce I just use a spoon and due to the fact that it is a short jar, I can easily find a spot to store my fake subway sauce in my fridge.

I tend to avoid bottles because they take up my precious door space and I don't like to lie down bottles.

📜 Sweet Onion Sauce dietaryspecification

1. Gluten-free
2. Vegan
3. Lactose-free
4. Preservative-free

💡 Sweet Onion Sauce Uses:

• Classic in Subs, Sandwiches
• As a dipping sauce for cooked meat, veggies, fried potato dishes
• As a Sweet Onion Dressing Vinaigrette
• In soups as a garnish
• In Mash Potato

👁️ More homemade Sauce Recipes:

• Thai Sweet Chili Sauce
• Big Mac Sauce
• Mango Habanero Hot Sauce
• Yum Yum Steak Sauce
• Vegan Burger Sauce by knowyourproduce.com

Dear Reader, How are you planning to use this sweet onion sauce?

📖 Recipe