A warm, rich, and comforting French onion soup made with slowly caramelized onions, savory beef broth, toasted French bread, and plenty of melted cheese. Perfect for a cozy dinner!
Ingredients
- 4 medium yellow onions, thinly sliced
- 5 medium sweet onions, thinly sliced
- ½ cup salted butter, melted
- 2 tbsp all-purpose flour
- 2 cloves garlic, minced
- 2 quarts beef broth
- 2 tbsp Worcestershire sauce
- 2 tsp beef bouillon
- 2 tsp black pepper
- 1 bay leaf
- Sliced French bread, toasted
- Shredded Gruyère cheese
- Sliced provolone cheese
Instructions
- Add the sliced onions to a slow cooker. Pour in the melted butter and stir until the onions are well coated.
- Cover and cook on LOW for 8–10 hours, stirring occasionally if possible, until the onions are soft and deeply caramelized.
- Add the garlic and flour. Stir well, then add the beef broth, Worcestershire sauce, beef bouillon, black pepper, and bay leaf.
- Cover and cook on LOW for another 6–8 hours, or until the flavors are rich and well combined.
- Remove the bay leaf. Taste and adjust the seasoning if needed.
- Toast slices of French bread until golden and crisp.
- Ladle the hot soup into oven-safe bowls. Top each bowl with toasted bread, Gruyère, and a little provolone.
- Place the bowls under the broiler for 2–3 minutes, until the cheese is melted, bubbling, and lightly golden.
- Serve hot and enjoy! 🧅🥖🧀
Makes about 6 bowls.