Go Back
–+ servings
caramelized onions for burgers in a black skillet with a wooden spoon
Print Recipe Pin Recipe
4.54 from 47 votes

Caramelized Onions for Burgers

I have the secret to the best Caramelized Onions for Burgers! They're easy to make in less than 30 minutes in just 3 steps!
Prep Time5 minutes
Cook Time20 minutes
Total Time25 minutes
Course: Side Dish
Cuisine: American
Keyword: caramelized onions, caramelized onions for burgers, caramelizing onions, how to make caramelized onions
Servings: 4 portions
Calories: 113kcal
Author: Isabel Laessig

Equipment

  • Skillet
  • Spatula or wooden spoon

Ingredients

  • 2 Tablespoons unsalted butter
  • 1 red onion cut into thin slices
  • 2 Tablespoons brown sugar
  • 3 Tablespoons balsamic vinegar
  • 1 teaspoon soy sauce
  • salt to taste
  • pepper to taste

See our Beef Temperature Chart for helpful tips on cooking any cut of beef!

Instructions

  • Melt butter in a skillet over medium-high heat. Add sliced red onions to the pan. Allow them to sit until they begin to brown.
    2 Tablespoons unsalted butter, 1 red onion
    red onions added to a skillet with butter
  • Add in brown sugar, balsamic vinegar, soy sauce, and salt and pepper when the onions just begin to brown.
    2 Tablespoons brown sugar, 3 Tablespoons balsamic vinegar, 1 teaspoon soy sauce, salt to taste, pepper to taste
    adding ingredients for caramelized onions to onions and butter in a skillet
  • Stir and continue to cook until browned and soft, about 15-17 minutes. Your caramelized onions are ready!
    caramelized onions in a skillet with a wooden spoon

Video

Notes

  • If you don't have balsamic vinegar, then red wine vinegar, whiskey, or vermouth can be used instead.
  • Sweet yellow or white onions can be used instead of red onions, if you prefer.
  • Onions shrink when caramelized, so if you're serving a large group, you may want to make more and freeze any leftovers you don't need right away. Just allow them to cool, then freeze for up to 3 months in freezer-safe bags or a container.

Nutrition

Serving: 1serving | Calories: 113kcal | Carbohydrates: 9g | Protein: 1g | Fat: 6g | Saturated Fat: 4g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 1g | Trans Fat: 1g | Cholesterol: 15mg | Sodium: 137mg | Potassium: 53mg | Fiber: 1g | Sugar: 7g | Vitamin A: 175IU | Vitamin C: 2mg | Calcium: 13mg | Iron: 1mg