Shortcut recipe for French Onion Soup that delivers deep savory flavors without hours of stirring. Simple, comforting and made with just few easy ingredients.
4 large onions (about 6–8 cups sliced), peeled and sliced thin
2 tablespoons olive oil or butter
4 cups beef broth or vegetable broth
2 sprigs fresh thyme
1 bay leaf
Salt and pepper to taste
4 slices French baguette
1 to 1½ cups shredded Gruyère cheese or shredded mozzarella Parmesan mix
Optional: 2-3 tablespoons white wine
Instructions
Peel and slice onions thinly, about ¼-inch thick for even cooking.
In large pot, add onions and olive oil or butter. Cover and cook on low heat for about 30 minutes, stirring every 8-10 minutes, until golden and caramelized.
Add broth, thyme sprigs, bay leaf, and season with salt and pepper. Add 2-3 tablespoons white wine if using. Bring to gentle simmer and cook for 15 minutes to let flavors meld.
While soup simmers, toast bread slices in oven at 375°F or on grill pan until crispy and golden on outside, about 5-7 minutes.
Use a spoon to fish out and discard thyme sprigs and bay leaf. Ladle soup into oven-safe soup bowls (12-16 oz capacity), top with toasted bread, sprinkle with shredded cheese. Place bowls on top oven rack (about 4-5 inches from broiler) and broil for 2-3 minutes until cheese is melted and bubbly.
Use oven mitts to carefully remove hot bowls. Let cool for a minute before serving. Enjoy while warm and gooey.
Notes
Use yellow or sweet onions for best caramelization. Covering the pot traps moisture and speeds up cooking without constant stirring.
Gruyère is traditional, but shredded mozzarella and Parmesan mix works great. Day-old bread toasts better and holds up in the soup.
Can make soup ahead and store broth separately from bread and cheese for up to 3 days refrigerated or 3 months frozen.