French Dip Burgers with White Cheddar Cheese and Caramelized Onions

Hello French Dip! We've given this classic all-American sammie a boost with garlic buns, caramelized onions and melted cheddar cheese. Don't forget the bistro side salad to finish off this mouthwatering meal!

Prep: 35 mins
Cook: 35 mins
Servings: 4

Ingredients

2 servings 4 servings
  • 250 gr ground beef
  • 2 brioche buns
  • 0.5 cups white cheddar cheese, shredded
  • 1 beef broth concentrate
  • 113 gr yellow onion
  • 1 tbsp red wine vinegar
  • 113 gr baby spinach
  • 0.25 cups italian breadcrumbs
  • 1 tbsp whole grain mustard
  • 2 tbsp mayonnaise
  • 190 gr tomato
  • 1.25 tsp sugar*
  • 1 tbsp unsalted butter*
  • 2.5 tbsp oil*
  • 0.625 tsp salt*
  • 0.188 tsp pepper*
  • 500 gr ground beef
  • 4 brioche buns
  • 1 cup white cheddar cheese, shredded
  • 2 beef broth concentrates
  • 226 gr yellow onion
  • 2 tbsp red wine vinegar
  • 227 gr baby spinach
  • 0.5 cups italian breadcrumbs
  • 2 tbsp whole grain mustard
  • 4 tbsp mayonnaise
  • 380 gr tomato
  • 2.5 tsp sugar*
  • 2 tbsp unsalted butter*
  • 5 tbsp oil*
  • 1.25 tsp salt*
  • 0.376 tsp pepper*

Instructions

  1. Before starting, preheat the oven to 450°F.
    Wash and dry all produce. Cut tomatoes into 1/4-inch pieces.Combine mayo and mustard in a small bowl. Set aside.Combine beef, breadcrumbs, 1/2 tsp (1 tsp) salt and 1/4 tsp (1/2 tsp) pepper in a large bowl. (TIP: If you prefer a more tender patty, add an egg to mixture!)Form mixture into two 4-inch-wide patties (4 patties for 4 ppl).
  2. Whisk together vinegar, 2 tbsp (4 tbsp) oil and 1/4 tsp (1/2 tsp) sugar in a medium bowl. Add tomatoes. Season with salt and pepper, then toss to coat. Peel, then cut onion into 1/4-inch slices. Heat a large non-stick pan over medium heat. When hot, add 1/2 tbsp (1 tbsp) oil, then onions. Cook, stirring occasionally, until slightly softened, 3-4 min. Add 1 tsp (2 tsp) sugar and season with salt. Cook, stirring occasionally, until onions are dark golden-brown, 3-4 min. Transfer onions to a plate and set aside. Carefully wipe the pan clean.
  3. Heat the same pan over medium. When hot, add patties to the dry pan. (NOTE: Don't overcrowd the pan; cook patties in 2 batches if needed.) Pan-fry until cooked through, 4-5 min per side.** Transfer patties to a plate, then cover to keep warm.
  4. Meanwhile, heat a small pot over medium heat. When hot, add 1 tbsp (2 tbsp) butter, 1 tbsp (2 tbsp) caramelized onions, 1/2 cup (1 cup) water and broth concentrate. Cook, stirring often, until au jus reduces slightly, 3-4 min.
  5. Meanwhile, halve buns, then arrange on a parchment-lined baking sheet, cut-side up. Sprinkle cheese over top buns.Toast in the middle of the oven until buns are golden and cheese is melted, 2-3 min. (TIP: Keep an eye on buns so they don't burn!)
  6. Add spinach to the bowl with tomatoes. Toss to combine.Spread mustard-mayo over bottom buns, then stack with patties and remaining caramelized onions. Close with top buns. Divide burgers and salad between plates. Serve au jus on the side for dipping.