French Onion Burgers

Why You’ll Love This Recipe

French Onion Burgers bring together the savory richness of caramelized onions and juicy beef patties, inspired by the classic French onion soup. These burgers are hearty, flavorful, and topped with melted cheese and toasted buns, making them an irresistible option for a comforting meal or an elevated backyard cookout.

ingredients

this Recipe

(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)

ground beefonionsbutterolive oilbeef brothWorcestershire saucethymegarlic powderSwiss cheese (or Gruyère)brioche or hamburger bunsmayonnaise (optional)salt and pepper

directions

In a large skillet, heat butter and olive oil over medium heat.

Add thinly sliced onions and cook slowly, stirring often, until caramelized and golden brown, about 20-25 minutes.

Stir in a splash of beef broth, Worcestershire sauce, thyme, and garlic powder. Simmer until liquid is absorbed. Set aside.

Season the ground beef with salt and pepper, then form into patties.

Cook the patties on a grill or skillet over medium-high heat, 3-4 minutes per side, until desired doneness.

Top each patty with a slice of Swiss cheese and let it melt.

Toast the buns lightly.

Assemble the burgers by spreading mayonnaise (if using) on the buns, adding the beef patty, and topping with a generous scoop of caramelized onions.

Servings and timing

This recipe yields 4 burgers.
Preparation time: 10 minutes
Caramelizing time: 25 minutes
Cooking time: 10 minutes
Total time: 45 minutes

Variations

Swap Swiss cheese with provolone or mozzarella for a different flavor.

Add a spoonful of Dijon mustard to the mayo for a tangy kick.

Include sautéed mushrooms with the onions for extra depth.

Use turkey or plant-based patties for a lighter or vegetarian option.

Add crispy fried onions on top for extra texture.

storage/reheating

Store leftover burger components separately in the fridge for up to 3 days.
Reheat patties and onions in a skillet over medium heat until warmed through.
Avoid microwaving buns to prevent sogginess; toast them again if needed.

FAQs

Can I make the onions ahead of time?
Yes, caramelized onions can be made up to 3 days in advance and stored in the fridge.

What’s the best cheese for French Onion Burgers?
Swiss or Gruyère are traditional, but you can use any melty cheese you like.

Do I need beef broth?
It adds richness, but you can substitute with vegetable broth or omit if needed.

How do I prevent soggy buns?
Toast them and layer with a barrier like mayo before adding the onions.

Can I freeze the patties?
Yes, shape and freeze raw patties with parchment in between. Thaw before cooking.

Can I grill the onions instead?
Grilling won’t give the same caramelized effect—slow stovetop cooking works best.

Are these spicy?
Not by default, but you can add crushed red pepper or spicy mayo if desired.

What sides go well with these burgers?
French fries, sweet potato fries, coleslaw, or a green salad pair perfectly.

Can I use pre-made patties?
Yes, but seasoning fresh patties gives the best flavor.

How thin should the onions be sliced?
Slice them as thinly as possible for even caramelization.

Conclusion

French Onion Burgers are a satisfying blend of juicy meat, melty cheese, and deeply flavorful onions that capture the comfort of French onion soup in burger form. Whether for a cozy dinner or a gourmet cookout, this recipe is sure to impress with its rich taste and mouthwatering aroma.

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