Keto Sweet Onion Sauce

Elevate your keto dishes with this decadent Keto Sweet Onion Sauce—a creamy, savory-sweet condiment that’s perfect for low-carb lifestyles! Caramelized yellow onions and garlic create a rich, aromatic base, while a hint of powdered erythritol, apple cider vinegar, and Dijon mustard add layers of sweet-tangy complexity. A splash of heavy cream and low-sodium soy sauce (or coconut aminos) ties everything together into a luscious, velvety sauce that’s irresistible drizzled over grilled meats, roasted veggies, or fresh salads. Ready in just 25 minutes, this quick and versatile recipe is a game-changer for meal prep, offering a keto-friendly twist on classic sweet onion flavors.

Nutriscore Rating: 45/100

Prep Time:10 mins

Cook Time:15 mins

Total Time:25 mins

Servings: 6

Ingredients

• 2 tablespoons butter
• 1 medium-sized, finely diced yellow onion
• 2 cloves, minced garlic
• 2 tablespoons powdered erythritol
• 1 tablespoon apple cider vinegar
• 1 teaspoon Dijon mustard
• 0.25 cup heavy cream
• 1 tablespoon low-sodium soy sauce or coconut aminos
• 0.25 teaspoon salt
• 0.25 teaspoon black pepper

Directions

Step 1

In a medium skillet, melt the butter over medium heat.

Step 2

Add the diced onion to the skillet and sauté for 8-10 minutes, stirring frequently, until the onions are soft and caramelized.

Step 3

Add the minced garlic to the skillet and sauté for an additional 1-2 minutes until fragrant.

Step 4

Sprinkle the powdered erythritol over the onions and stir to combine, allowing the sweetness to meld with the onions.

Step 5

Add the apple cider vinegar, Dijon mustard, and low-sodium soy sauce (or coconut aminos) to the skillet. Stir well to incorporate.

Step 6

Reduce the heat to low, then pour in the heavy cream. Stir continuously until the sauce thickens slightly, about 2-3 minutes.

Step 7

Season with salt and black pepper to taste, stirring one final time.

Step 8

Remove from heat and allow the sauce to cool slightly. It can be used immediately or stored in an airtight container in the refrigerator for up to 5 days.

Nutrition Facts

Serving size	(265.0g)

Amount per serving	% Daily Value*
Calories	485.4

Total Fat 44.2g	0%
Saturated Fat 24.8g	0%
Polyunsaturated Fat 0.7g
Cholesterol 125.8mg	0%
Sodium 1377.5mg	0%
Total Carbohydrate 37.6g	0%
Dietary Fiber 2.2g	0%
Total Sugars 5.0g
Protein 2.9g	0%

Vitamin D 4.5IU	0%
Calcium 43.3mg	0%
Iron 0.6mg	0%
Potassium 259.6mg	0%

*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

Source of Calories

Fat: 71.1%

Protein: 2.1%

Carbs: 26.9%