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Toast the brioche buns lightly on the grill or in a skillet.
Spread a layer of mayonnaise on the bottom bun (optional).
Place the burger patty with melted cheese on the bottom bun.
Top with a generous portion of the caramelized onions.
Garnish with fresh thyme, cover with the top bun, and serve immediately.
Prep Time: 10 minutes
Total Time: 50 minutes
Servings: 4
These French Onion Soup Burgers combine the rich flavors of caramelized onions and Gruyere cheese with juicy beef patties, creating an irresistible twist on a classic burger. Perfect for a cozy dinner or a gourmet cookout!
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