Description
This Homemade Sweet Onion Sauce is a perfect balance of sweet, tangy, and savory flavors, just like the famous Subway version! It’s an easy-to-make sauce that pairs beautifully with sandwiches, wraps, salads, grilled meats, and more. With simple ingredients and quick preparation, you can enjoy this delicious sauce anytime at home!
Ingredients
- 2/3 cup granulated sugar
- 1/2 cup cold water
- 6 tbsp white or distilled vinegar
- 1 tbsp cornstarch (or arrowroot powder)
- 1 tbsp minced onion flakes
- 2 1/2 tsp Dijon mustard
- 2 1/2 tsp mustard powder
- 3/4 tsp celery salt
- 3/4 tsp fresh onion juice (use a garlic press)
- 1 tsp poppy seeds
- 1/2 tsp onion powder
- 1/4 tsp garlic powder
- 1/2 tsp salt
- 1/3 tsp paprika
- 1/4 tsp black pepper
- 1–2 drops sesame oil
Instructions
1️⃣ In a small saucepan, whisk together sugar, water, vinegar, cornstarch, minced onion flakes, Dijon mustard, mustard powder, celery salt, and fresh onion juice until fully combined.
2️⃣ Place the saucepan over medium-high heat and stir constantly as the mixture begins to warm up and thicken.
3️⃣ Once the sauce starts bubbling slightly, reduce the heat to medium-low. Add poppy seeds, onion powder, garlic powder, salt, paprika, black pepper, and sesame oil. Stir well.
4️⃣ Simmer for about 5 minutes, stirring frequently, until the sauce reaches a smooth and slightly thick consistency. If it becomes too thick, add a teaspoon of water and whisk until desired texture is achieved.
5️⃣ Remove from heat and allow to cool slightly before transferring the sauce to a clean jar or airtight container.
6️⃣ Refrigerate overnight for the best flavor. Serve and enjoy!
Notes
✅ For a sugar-free version, substitute sugar with honey, maple syrup, or stevia.
✅ For a spicier sauce, add a pinch of cayenne pepper or red pepper flakes.
✅ For a smoother texture, strain the sauce before storing.
✅ Refrigeration Tip: This sauce keeps indefinitely in an airtight container in the refrigerator.
- Prep Time: 5 minutes
- Cook Time: 10 minutes