• Newsletters
  • Subscribe
/
1x

French Onion Burger

7

  • Prep Time10 min
  • Total Time50 min
  • Makes4 servings
A burger topped with gruyere cheese and slow-cooked onionse

This decadent, incredibly juicy burger recipe can be easily whipped up on a weeknight, but is impressive enough for company.

Ingredients

  • 3 tbsp unsalted butter, divided

  • 1 Spanish onion, sliced into rounds

  • 1 cup beef broth

  • 500 g lean ground beef

  • 1 tbsp finely chopped thyme

  • 2 tsp Dijon mustard

  • 4 slices Gruyère cheese

  • 4 brioche burger buns, split

  • 1/2 cup mayonnaise

  • 1 tbsp chopped parlsey

  • 1 cup arugula, (optional)

Instructions

  • Melt butter in a large frying pan over medium. Reserve 1 tbsp in a small bowl. Add onion to pan and cook, stirring often, until softened, about 8 min. Pour in broth and continue cooking, stirring occasionally, until onion is very soft, about 15 min.

  • Meanwhile, combine beef with thyme and Dijon in a large bowl. Divide into 4 portions, then form into four 4-in. patties. Sprinkle both sides with salt and ¼ tsp pepper.

  • Preheat barbecue or grill pan on medium. Oil grill. Cook patties, lid closed, until cooked through, 5 to 6 min per side. Melt a slice of cheese on each patty, lid closed, 2 min.

  • Brush reserved 1 tbsp butter on insides of brioche buns, then place on grill to toast, about 2 min.

  • Meanwhile, stir mayo with parsley and remaining 3/4 tsp pepper in a small bowl.

  • Spread bottom buns with pepper mayo. Layer with patties, sautéed onions and arugula. Sandwich with top bun.

Get more of our best burger recipes.

Chatelaine celebrates, inspires, informs and empowers. We know that Canadian women contain multitudes, and we cover all of the issues—big and small—that matter to them, from climate change to caregiving, Canadian fashion and what to cook now.

Advertisement
Advertisement
Copy link
The cover of Chatelaine's Spring 2026 issue.

Subscribe to Chatelaine!

A Bright Spot: Our Spring 2026 issue features 12 colourful DIY decor hacks from guest editor Alexandra Gater. Plus, recipes for protein-packed breakfasts, cheese soufflé and a dreamy rhubarb cake.