French Onion Stuffed Burgers with Melted Cheese

French Onion Stuffed Burgers with Melted Cheese are a gourmet twist on the classic hamburger, featuring juicy beef patties stuffed with caramelized onions and gooey cheese. Served on toasted buns and optionally topped with more onions or a swipe of Dijon, these burgers are rich, savory, and incredibly satisfying.

Why You’ll Love This Recipe

This burger takes inspiration from French onion soup, capturing the same deep flavor with sweet caramelized onions and melted cheese, all tucked inside a perfectly grilled burger patty. It’s a luxurious and flavor-packed upgrade to your standard burger and perfect for weekend cookouts or elevated weeknight meals.

Ingredients

(Tip: You can find the complete list of ingredients and their measurements in the recipe card below.)

• Ground beef (80/20 blend recommended)
• Yellow onions, thinly sliced
• Butter
• Olive oil
• Salt and black pepper
• Worcestershire sauce
• Garlic (minced)
• Gruyère or Swiss cheese (shredded or sliced)
• Hamburger buns
• Optional: Dijon mustard, arugula, mayonnaise, additional cheese, or caramelized onion topping

Directions

1. Caramelize the onions: In a skillet, heat olive oil and butter over medium-low heat. Add sliced onions and a pinch of salt. Cook, stirring occasionally, for 25–30 minutes until deeply golden and soft. Add minced garlic and a splash of Worcestershire sauce in the last few minutes of cooking. Set aside to cool.
2. Form the patties: Divide ground beef into 8 equal portions. Flatten each into a thin round.
3. Spoon a portion of the cooled caramelized onions and shredded cheese onto the center of 4 rounds. Top with the remaining 4 beef rounds and press the edges to seal tightly. Season with salt and pepper.
4. Cook the burgers: Grill or pan-sear over medium-high heat for 4–5 minutes per side, or until cooked through and cheese is melted. Avoid flipping too often.
5. Toast the buns and assemble burgers with your choice of toppings and condiments.

Servings and Timing

Servings: 4 burgers
Prep Time: 20 minutes
Cook Time: 30 minutes
Total Time: 50 minutes

Variations

• Use blue cheese or sharp white cheddar for a stronger cheese flavor.
• Add mushrooms to the caramelized onions for a more savory filling.
• Use turkey or plant-based meat alternatives for dietary preferences.
• Add a splash of red wine while caramelizing onions for extra depth.

Storage/Reheating

Storage: Store cooked patties in an airtight container in the refrigerator for up to 3 days.
Reheating: Reheat in a skillet over medium heat or in the microwave. Add a splash of water and cover to retain moisture.

FAQs

Can I caramelize the onions ahead of time?

Yes, they can be made up to 3 days in advance and stored in the fridge.

What cheese works best for this recipe?

Gruyère is classic, but Swiss, provolone, or even mozzarella can be used depending on your taste.

Can I freeze the stuffed patties?

Yes, freeze them raw on a tray, then transfer to a container or bag. Cook from frozen or thaw before cooking.

How do I keep the stuffing from leaking?

Seal the edges well and avoid overstuffing. Chill the patties for 15 minutes before cooking if needed.

Are these burgers gluten-free?

The patties are, but ensure you use gluten-free buns and condiments.

Can I cook these on a grill?

Yes, just make sure the grates are clean and oiled to prevent sticking.

How do I know when the burgers are done?

Use a meat thermometer—internal temperature should reach 160°F (71°C) for ground beef.

Can I serve this with a sauce?

Yes, Dijon mustard, aioli, or even a thin gravy can enhance the French onion flavor.

Can I make sliders instead?

Absolutely—just make smaller patties and reduce the cooking time accordingly.

What sides pair well with these burgers?

Try them with roasted potatoes, a green salad, or French fries.

Conclusion

French Onion Stuffed Burgers with Melted Cheese bring the rich, comforting flavor of French onion soup into a juicy, cheese-stuffed burger. They’re perfect for anyone looking to elevate their burger game with minimal extra effort and maximum flavor.

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