Juicy beef patties topped with caramelized onions, melted cheese, and rich French onion flavors—like a classic soup turned into a burger!
Ingredients (4 servings)
Burgers
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1 lb ground beef (80/20 for juiciness)
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Salt & black pepper, to taste
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4 slices Swiss or Gruyère cheese
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4 burger buns, toasted
French Onion Topping
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2 large onions, thinly sliced
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2 tbsp butter
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1 tsp olive oil
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1 tsp sugar (optional, for caramelization)
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1 tsp balsamic vinegar (optional, for depth)
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Salt & pepper
Optional
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French onion soup concentrate or beef broth drizzle
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Crispy onions for crunch
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Dijon mustard or horseradish sauce
Instructions
1. Caramelize Onions
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Heat butter + olive oil in a skillet over medium-low heat.
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Add sliced onions and a pinch of salt. Cook slowly, stirring often, 20–25 minutes until golden and soft.
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Add sugar and balsamic vinegar toward the end for extra flavor.
2. Prepare Burgers
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Form ground beef into 4 patties.
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Season generously with salt and pepper.
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Cook on a skillet or grill over medium-high heat, 4–5 minutes per side (medium).
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Add cheese in the last 1–2 minutes of cooking to melt.
3. Assemble Burgers
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Place patty with melted cheese on toasted bun.
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Top with caramelized onions.
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Drizzle lightly with beef broth or French onion soup concentrate if desired.
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Add extra condiments or crispy onions for crunch.
Flavor & Texture
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Sweet, deeply flavored onions
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Juicy, savory beef with melted cheese
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Toasted bun absorbs some savory juices
Tips
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Cook onions slowly for maximum sweetness
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Use Gruyère for authentic French onion flavor
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For extra indulgence, toast buns with butter and a little garlic
Variations
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Double Cheese: Add both Swiss and provolone
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French Onion Sliders: Mini buns for appetizers
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Caramelized Onion & Mushroom: Sauté mushrooms with onions
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Low-Carb: Lettuce wrap instead of bun
If you want, I can make a sheet-pan French onion burger bake version or a slow-cooker French onion burger sauce for ultra-easy prep.