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French Onion Burgers

French Onion Burgers

French Onion Soup Burgers combine juicy beef patties, sweet caramelized onions, and melted Gruyère cheese for the ultimate gourmet comfort food. Ready in 45 minutes.
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Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Servings: 4 burgers
Calories: 580
Ingredients Equipment Method Nutrition Notes

Ingredients
  

  • 1 pound ground beef (80/20 blend)
  • 2 large yellow onions, thinly sliced
  • 1 tbsp butter
  • 1 tbsp olive oil
  • 1 tsp sugar
  • 1 tsp balsamic vinegar
  • 1/2 tsp garlic powder
  • 1/2 tsp salt
  • 1/4 tsp black pepper
  • 4 slices Gruyère or Swiss cheese
  • 4 buns brioche or hamburger buns
  • to taste fresh thyme (optional, for garnish)

Equipment

  • Large skillet
  • Mixing bowl
  • Sharp knife and cutting board
  • Spatula
  • Measuring spoons

Method
 

  1. In a large skillet, heat butter and olive oil over medium heat.
  2. Add the sliced onions and stir only every 5 minutes for 20-25 minutes until caramelized.
  3. Stir in sugar and balsamic vinegar; cook for an additional 2 minutes, then set aside.
  4. In a mixing bowl, combine ground beef with garlic powder, salt, and pepper; mix gently and shape into 4 patties.
  5. Heat grill or cast iron skillet over medium-high heat and cook patties for 4-5 minutes per side for medium doneness.
  6. In the last minute of cooking, place slices of cheese on patties and cover to melt.
  7. Lightly toast brioche buns, then assemble by placing a patty on the bottom bun, topping with caramelized onions, and garnishing with thyme if desired.
  8. Add the top bun and enjoy!

Nutrition

Calories: 580kcalCarbohydrates: 32gProtein: 38gFat: 36gSaturated Fat: 15gCholesterol: 95mgSodium: 820mgPotassium: 620mgFiber: 2gSugar: 6gVitamin A: 10IUVitamin C: 6mgCalcium: 30mgIron: 18mg

Notes

Allow the onions to caramelize slowly for the best flavor; rushing can lead to burnt onions. Experiment with different cheese options; Gruyère and Swiss are recommended for a good melt. Store leftovers separately in airtight containers in the fridge; they can last up to 3 days. Reheat gently for best results. For a lighter option, consider using ground turkey or chicken, and be mindful of cooking times as they differ from beef.
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