Homemade Sweet Onion Sauce Recipe for Subway Sandwiches

Are you a fan of that irresistible Sweet Onion Sauce Subway Style that takes your sandwiches to the next level? Look no further because I have the perfect copycat recipe that will have you enjoying that beloved flavor right in the comfort of your own home. This sweet onion sauce strikes the ideal balance between sweet, tangy, and savory notes, making it a versatile and delicious addition to your meals.

Crafted after numerous trials to capture the essence of the Subway sauce we all know and love, this recipe has become a staple in my household. Whether drizzled over sandwiches, used as a dip for veggies, or even as a secret ingredient in dressings, this sauce is a game-changer. The magic touch of celery seed in this recipe adds a subtle yet distinctive taste that truly sets it apart, fooling even the most discerning palates into thinking it came straight from the Subway counter.

Not only does this Sweet Onion Sauce Subway Style enhance your sandwiches, but it also elevates your entire culinary repertoire. Mix it into spreads, marinades, or dressings, and watch your dishes transform with its delectable flavor profile. Plus, with a few simple tweaks, you can make a low-carb version without compromising on taste, catering to various dietary needs without sacrificing the essence of this iconic sauce.

Quick Benefits

• Elevates any sandwich with perfect balance of sweet, tangy, and savory flavors
• Versatile sauce suitable for sandwiches, salads, grilled meat, burgers, roasted vegetables, and more
• Can be easily adapted for low-carb diets without sacrificing flavor
• Secret ingredient, celery seed, provides authentic and distinctive flavor

Why You’ll Love This Homemade Sweet Onion Sauce Recipe for Subway Sandwiches Recipe

• Authentic Subway Flavor: Recreates the beloved Subway sweet onion sauce with its perfect balance of sweet, tangy, and savory flavors.
• Versatile Uses: Elevate sandwiches, burgers, grilled chicken, salads, vegetables, and more with this sauce. Use it as a dip, spread, marinade, or salad dressing.
• Secret Ingredient: The celery seed adds a subtle yet distinctive flavor that makes the sauce taste authentic and stand out.
• Low-Carb Option: Easily adapt the recipe by using a low-carb sweetener, making it suitable for those on a keto or diabetic-friendly diet without sacrificing flavor.
• Family Favorite: Loved by both kids and adults, this sauce has become a weekly staple in many households and can be enjoyed in various ways beyond sandwiches.
• Easy to Adjust Consistency: Simple tips provided to adjust the consistency if the sauce is too thin or too thick, ensuring a perfect texture every time.
• Long Shelf Life: Can be stored in the refrigerator for up to 4 weeks or frozen for longer storage, allowing you to enjoy the sauce whenever cravings strike.
• Homemade Goodness: Impress your family and friends with a sauce that tastes so authentic that they might mistake it for store-bought.

Ingredients for Homemade Sweet Onion Sauce Recipe for Subway Sandwiches

• ¼ teaspoon onion powder
• ⅛ teaspoon heaping garlic powder
• 1 tablespoon cornstarch
• 1 teaspoon finely grated onion
• 1 tablespoon dijon mustard
• 6 tablespoons white vinegar
• ¼ teaspoon heaping paprika
• ½ teaspoon celery seed
• 4 ½ teaspoons red wine vinegar
• 1 teaspoon salt
• 1 cup granulated sugar
• 1 tablespoon dried minced onion
• 2 teaspoons dry mustard powder
• ¼ teaspoon sesame oil
• ¾ teaspoon poppy seeds
• ½ cup + 1 tablespoon water
• ¼ teaspoon heaping ground black pepper

Pro Tips for Homemade Sweet Onion Sauce Recipe for Subway Sandwiches

To achieve that authentic Subway sweet onion sauce flavor, do not skip the celery seed. This seemingly small ingredient is key to providing the distinctive taste that makes this sauce stand out. Make sure to include it in your recipe for that special touch.

For those looking to reduce the carbohydrate content of the sauce, you can easily swap out the granulated sugar with a sugar substitute that measures cup for cup with regular sugar. Allulose works well in this recipe, providing the sweetness without the cooling effect of some other substitutes. By making this simple modification, you can enjoy a lower-carb version of the sauce without compromising on taste.

How to Make Homemade Sweet Onion Sauce Recipe for Subway Sandwiches

Step 1: Mix Ingredients

Combine all ingredients in a small saucepan and whisk together.

Step 2: Boil Sauce

Whisk often while bringing to a boil over medium-high heat to prevent burning.

Step 3: Simmer until Thickened

Lower the heat to low and simmer for about 5 minutes, whisking often, until thickened.

Step 4: Cool and Store

Cool completely before transferring to an airtight container. Label and refrigerate for up to 4 weeks or freeze for longer storage.

Storage Tips

After preparing the sweet onion sauce, store it in an airtight container in the refrigerator. This sauce can be kept in the fridge for up to 4 weeks, maintaining its flavor and freshness. If you want to extend its shelf life further, you can freeze the sauce for longer storage. Simply transfer it to a freezer-safe container or bag, making sure to leave some room for expansion, and freeze it for future use.

To ensure the best texture and consistency of your sweet onion sauce, it’s essential to whisk it thoroughly during the cooking process. This prevents burning, helps evenly distribute the cornstarch, and results in a smooth and thick sauce. If you notice any separation or graininess in the sauce during storage, a quick shake or stir will bring it back together. For the smoothest texture, make sure all dry ingredients are fully dissolved while cooking. If needed, you can adjust the consistency by adding a cornstarch slurry for thickening or a few drops of water for thinning. This versatile sauce is perfect for sandwiches, salads, grilled dishes, and even as a dip or spread, adding a burst of sweet and tangy flavor to your meals.

Ingredient Substitutions

For a low-carb version of this sweet onion sauce, you can easily swap the granulated sugar with a low-carb sweetener that measures cup for cup with sugar. Allulose is a good choice as it dissolves well and doesn’t have a strong cooling effect like erythritol. The cornstarch can stay in the recipe as it adds minimal carbs per serving. This adjustment significantly reduces the carbohydrate content while still delivering the beloved sweet onion flavor profile that defines this sauce.

If you’re missing dried minced onion, you can slightly increase the amount of finely grated fresh onion to maintain the overall balance of flavors in the sauce. This substitution will help keep the sweet onion taste intact without drastically changing the texture or consistency of the final product. Remember to finely grate the fresh onion to ensure it incorporates well into the sauce and distributes its flavor evenly throughout.

Serving Suggestions

For a fun and interactive twist, consider setting up a DIY Subway-style sandwich bar with a variety of bread, meats, cheeses, and fresh toppings. Provide a bowl of this homemade sweet onion sauce alongside other condiments for guests to drizzle generously over their creations. Not only will everyone get to customize their sandwich just the way they like it, but they’ll also get to experience the delicious flavors of this iconic Subway sauce in a whole new way.

Another creative idea is to use this sweet onion sauce as a glaze for grilled vegetables. Simply brush the sauce over skewers of mixed veggies like bell peppers, zucchini, and cherry tomatoes before grilling to create a caramelized and flavorful side dish that’s sure to impress. The sweetness of the sauce pairs beautifully with the charred edges of the vegetables, making it a delightful addition to any barbecue or cookout spread.

FAQs for Homemade Sweet Onion Sauce Recipe for Subway Sandwiches

Can I make this sweet onion sauce recipe low-carb?

Yes, you can use a low-carb sweetener that measures cup for cup with sugar. This is a great option for keto or diabetic-friendly variations.

How should I store the sweet onion sauce?

Store the sauce in an airtight container in the refrigerator for up to 4 weeks. For longer storage, you can freeze it.

If I don’t have dried minced onion, what can I use as a substitute?

If you don’t have dried minced onion, you can increase the finely grated fresh onion by a small amount to maintain the flavor balance.

Why is whisking important when making this sauce?

Whisking prevents the sauce from burning and ensures the cornstarch is evenly distributed, resulting in a smooth and thick consistency.

Conclusion

In conclusion, mastering the art of creating this Sweet Onion Sauce Subway Style at home will not only bring joy to your taste buds but also elevate your culinary creations to a whole new level. The balance of sweet, tangy, and savory flavors in this sauce is truly a game-changer for any dish it graces.

So don’t hesitate to whip up a batch of this versatile and delicious sauce, whether you’re recreating your favorite Subway sandwich or experimenting with new flavor combinations in your own kitchen. The possibilities are endless, and the satisfaction of making your own customized condiment is truly rewarding. Embrace the magic of Sweet Onion Sauce Subway Style and let your taste buds dance with delight!

Homemade Sweet Onion Sauce Recipe for Subway Sandwiches

Elevate your sandwiches with this copycat Subway-style sweet onion sauce, a perfect blend of sweet, tangy, and savory flavors with a secret ingredient that makes it truly authentic.

Print Recipe Pin Recipe

Prep Time10 Minutes

Cook Time5 Minutes

Total Time15 Minutes

CuisineAmerican

Skill LevelEasy

Servings1 ¼ cups sauce

Ingredients

• ¼ teaspoon onion powder
• ⅛ teaspoon heaping garlic powder
• 1 tablespoon cornstarch
• 1 teaspoon finely grated onion
• 1 tablespoon dijon mustard
• 6 tablespoons white vinegar
• ¼ teaspoon heaping paprika
• ½ teaspoon celery seed
• 4 ½ teaspoons red wine vinegar
• 1 teaspoon salt
• 1 cup granulated sugar
• 1 tablespoon dried minced onion
• 2 teaspoons dry mustard powder
• ¼ teaspoon sesame oil
• ¾ teaspoon poppy seeds
• ½ cup + 1 tablespoon water
• ¼ teaspoon heaping ground black pepper

Instructions

1. Mix Ingredients: Combine all ingredients in a small saucepan and whisk together.
2. Boil Sauce: Whisk often while bringing to a boil over medium-high heat to prevent burning.
3. Simmer until Thickened: Lower the heat to low and simmer for about 5 minutes, whisking often, until thickened.
4. Cool and Store: Cool completely before transferring to an airtight container. Label and refrigerate for up to 4 weeks or freeze for longer storage.