Classic French Onion Soup (Rich, Caramelized, and Comforting)
Few dishes are as comforting, rich, and full of flavor as French Onion Soup. This classic French recipe features sweet, caramelized onions simmered in a savory beef broth, topped with a toasted baguette slice and melted Gruyère cheese. It’s a perfect starter for a dinner party, a warm lunch on a chilly day, or an indulgent weeknight treat.
Making French Onion Soup at home may seem intimidating, but with a little patience and a few simple techniques, you can achieve a deep, rich flavor that rivals any restaurant.
⭐ Why You’ll Love This Recipe
Rich, savory, and full of caramelized onion flavor
Perfectly cheesy and gooey topping
Simple ingredients, big flavor
Comforting and warming for cold days
Can be made ahead and reheated
🧅 Ingredients
4 large yellow onions, thinly sliced
3 tablespoons unsalted butter
1 tablespoon olive oil
1 teaspoon sugar (optional, helps caramelize onions)
3 cloves garlic, minced
6 cups beef broth (or a mix of beef and chicken broth)
½ cup dry white wine or sherry (optional)
1 teaspoon fresh thyme leaves (or ½ tsp dried)
1 bay leaf
Salt and pepper, to taste
1 baguette, sliced into ½-inch rounds
2 cups Gruyère cheese, grated (or Swiss cheese)
🥄 Instructions
1. Caramelize the Onions
In a large pot or Dutch oven, heat butter and olive oil over medium heat.
Add sliced onions and sugar (if using). Cook slowly, stirring frequently, until onions are golden brown and caramelized, about 35–40 minutes.
Add garlic during the last 2 minutes of cooking.
2. Deglaze the Pan
Add white wine or sherry to the caramelized onions, scraping up any browned bits from the bottom of the pot. Let it reduce for 2–3 minutes.
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