French Onion Soup Burgers

Indulge in Comfort with French Onion Soup Burgers

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Step into a world of culinary bliss as we present a fusion of two beloved classics – French Onion Soup and Burgers! Imagine the rich flavors of caramelized onions, melted cheese, and savory beef nestled between toasted buns, creating a symphony of taste that’s both comforting and indulgent. Join us on a gastronomic journey as we unveil the recipe for French Onion Soup Burgers, a dish that’s sure to delight your senses and elevate your burger game to new heights. Get ready to savor the essence of French cuisine with every bite of this delectable creation!


  • 1 lb ground beef
  • 4 slices of Swiss or Gruyère cheese
  • 2 large yellow onions, thinly sliced
  • 2 tablespoons unsalted butter
  • 1 tablespoon olive oil
  • 1 teaspoon sugar
  • 1 teaspoon balsamic vinegar
  • 4 hamburger buns, toasted
  • 1 teaspoon fresh thyme leaves
  • Salt and pepper to taste
  • 1 clove garlic, minced
  • Optional: 1/4 cup beef broth


  1. Prepare the Onions:
    • In a large skillet, melt the butter and olive oil over medium heat. Add the thinly sliced onions and cook, stirring occasionally, until caramelized and golden brown, about 20-25 minutes.
  2. Enhance the Flavor:
    • Sprinkle sugar over the caramelized onions and continue cooking for an additional 5 minutes until onions are further caramelized. Add balsamic vinegar and cook for another 2-3 minutes. Season with salt, pepper, and fresh thyme leaves.
  3. Form the Burger Patties:
    • While the onions are cooking, season the ground beef with salt, pepper, and minced garlic. Divide the seasoned beef into 4 equal portions and shape them into burger patties.
  4. Cook the Burger Patties:
    • Heat a grill or skillet over medium-high heat. Cook the burger patties for 3-4 minutes on each side, or until they reach your desired level of doneness. During the last minute of cooking, place a slice of Swiss or Gruyère cheese on top of each patty to melt.
  5. Assemble the Burgers:
    • Place the toasted hamburger buns on a serving plate. Place a burger patty on the bottom half of each bun. Top each patty with a generous portion of caramelized onions.
  6. Serve and Enjoy:
    • Close the burgers with the top halves of the buns and serve immediately while still warm.

Cook Notes and Variations:

  • Vegetarian Option: Substitute the ground beef with a plant-based burger patty or a portobello mushroom cap for a vegetarian version of French Onion Soup Burgers.
  • Cheese Variations: Experiment with different types of cheese such as Emmental, provolone, or mozzarella for unique flavor combinations.
  • Bun Variations: Swap out the traditional hamburger buns for crusty French baguettes or sourdough rolls for added texture and flavor.

Keto Version: For a keto-friendly version of French Onion Soup Burgers, skip the hamburger buns altogether and serve the burger patties and caramelized onions on a bed of fresh lettuce or mixed greens. Use low-carb cheese options such as cheddar or pepper jack, and opt for grass-fed beef for added health benefits.

Low Carb Version: To reduce the carb content of French Onion Soup Burgers, choose low-carb or keto-friendly hamburger bun alternatives made from almond flour or coconut flour. You can also use lettuce wraps or portobello mushroom caps as a bun substitute. Serve the burgers with a side of roasted vegetables or a crisp salad to complete the meal.

Frequently Asked Questions (FAQs):

Q: Can I make the caramelized onions ahead of time? A: Yes, you can caramelize the onions in advance and store them in an airtight container in the refrigerator for up to 3 days. Reheat them gently on the stovetop or in the microwave before serving.

Q: Can I freeze the burger patties? A: Yes, you can freeze the uncooked burger patties for up to 3 months. Place them on a baking sheet lined with parchment paper and freeze until firm, then transfer them to a resealable plastic bag or freezer-safe container. Thaw in the refrigerator overnight before cooking.

In conclusion, French Onion Soup Burgers are a delightful fusion of two classic dishes that will tantalize your taste buds and satisfy your cravings for comfort food. With their juicy burger patties, melty cheese, and sweet, savory caramelized onions, these burgers are a feast for the senses. Whether you’re hosting a backyard barbecue or enjoying a cozy dinner at home, French Onion Soup Burgers are sure to be a hit with family and friends. So, fire up the grill, gather your ingredients, and prepare to indulge in the ultimate burger experience!

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