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French Onion Beef Soup and Grilled Cheese

There’s something about French onion soup that feels like a warm embrace on a chilly day, but this version takes comfort to a whole new level. Tender chunks of slow-simmered beef melt into a sea of caramelized onions, rich broth, and bubbling Gruyère that clings to every spoonful. And just when you think it can’t get any better, you dip in a buttery croissant grilled cheese layered with more caramelized onions and shredded beef. It’s the kind of cozy, soul-satisfying meal that turns an ordinary night into something unforgettable.
Prep Time15 minutes
Cook Time2 hours
Course: dinner, lunch
Cuisine: American, French
Keyword: french onion, grilled cheese, soup
Servings: 4
Author: kingcooks

Ingredients

French Onion Beef Soup

  • 2 lbs chuck roast cut into 1-2 inch pieces
  • 5-6 large onions sliced
  • 4-5 cups beef broth
  • 2 cups Gruyère cheese shredded
  • 1 cup white wine
  • 3 tbsp unsalted butter
  • 2 tbsp flour
  • 1 tbsp garlic paste or minced
  • 1 tbsp worcestershire sauce
  • 1 tbsp dark brown sugar
  • 2 sprigs thyme
  • 2 bay leaves
  • 1 tsp salt plus more to taste
  • 1 tsp black pepper plus more to taste
  • Olive oil for cooking

French Onion Beef Grilled Cheese

  • 8 slices croissant loaf
  • 2 cups Gruyère cheese shredded
  • 1/2 cup shredded beef reserved from soup
  • 1/2 cup caramelized onions reserved from soup
  • Unsalted butter for cooking

Garnish

  • Thyme chopped

Instructions

French Onion Beef Soup

  • Season beef with salt and pepper.
  • To a dutch oven over medium heat, sear the seasoned beef on all sides for about 3-4 minutes per side.
  • Once seared, remove from pot and lower heat to medium low.
  • Add the sliced onions to the same pot with butter, a pinch of salt, a pinch of pepper and dark brown sugar.
  • Continuously stir until the onions caramelize. This will take anywhere from 10-15 mins.
  • Stay close and keep stirring to prevent the onions from burning.
  • Once caramelized, add garlic and cook until fragrant.
  • Reserve 1/2 cup of the caramelized onions for the grilled cheese.
  • Sprinkle the remaining onions in the pan with flour and stir to allow the flour to be absorbed.
  • Deglaze the pan with white wine and Worcestershire sauce. Cook for 2-3 minutes.
  • Return the seared beef to the pot and add enough beef broth to cover.
  • Add thyme and bay leaves. Cover and cook on low for 1-2 hours. Or until the beef is fall apart tender.
  • Once cooked, reserve 1/2 cup of the tender beef. Shred and set aside.
  • Leave the soup to simmer on low heat until you’re ready to serve.

French Onion Beef Grilled Cheese

  • Layer Gruyère cheese with the reserved caramelized onions and shredded beef between two slices of croissant loaf.
  • To a pan over medium low heat, add some butter and toast each sandwich on both sides until golden brown and the filling is melted and gooey. Once cooked, serve immediately.

Assemble

  • To baking safe dishes, add a few ladles full of the soup. Top with shredded
  • Gruyère cheese. Broil in the oven until the cheese is melted and bubbling.
  • Once ready to serve, top with thyme and enjoy with the toasted grilled cheese. Enjoy!