Sous Vide Caramelized Onions Recipe

Prep Time
15 Minutes
Cook Time
3 Hours

Cooked sous vide, these caramelized onions are a breeze to make. Learn how to make caramelized onions in no time with this effortless recipe.


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  • 2 tbsp butter
  • 2 lbs. cooking onions, sliced
  • 1/2 tsp each salt and pepper
  • 1/4 tsp granulated sugar
  • 2 tbsp finely chopped fresh thyme
  • 1 tbsp balsamic vinegar


  1. Melt butter in large skillet set over medium heat; cook onions, salt, pepper, and sugar, stirring often, for 5 to 8 minutes or until slightly softened. Let cool completely. Stir in thyme and balsamic vinegar.
  2. Add cooled onions to FoodSaver Gallon Vacuum Seal Precut Bag. Vacuum seal according to appliance guidelines.
  3. Fill cooking pot with water. Add sous vide machine; set to 185 degrees F. Lower vacuumed bag into heated water, weighing down to submerge, if necessary. Set timer to 3 hours.
  4. Carefully remove bag from water; let stand for 5 minutes before opening and removing caramelized onions.

Tip: The possibilities for using caramelized onions are endless. Go classic and make French onion soup; or add to sandwiches, pastas, veggies, sauces, meatballs, meatloaves, casseroles, and stuffing.


Nutrition Facts

Per 1/6 recipe (1/2 cup)


Calories 90

Total Fat 4g

Saturated Fat 2.5g

Cholesterol 10mg

Sodium 230mg

Carbohydrate 14g

Dietary Fiber 2g

Total Sugars 6g

Protein 2g

Vitamin D 0.1mcg

Calcium 35mg

Iron 0.5mg

Potassium 210mg

Side Dishes
Sous Vide