Dutch Oven French Onion Soup (Printable Version)

Slow-caramelized onions in rich broth, topped with crispy baguette and melted Gruyère cheese for ultimate comfort.

# What You Need:

→ Onions

01 - 5 large yellow onions, thinly sliced

→ Aromatics

02 - 3 tablespoons unsalted butter
03 - 2 tablespoons olive oil
04 - 2 garlic cloves, minced
05 - 1 teaspoon sugar

→ Broth & Flavorings

06 - 8 cups beef broth
07 - 1/2 cup dry white wine
08 - 2 teaspoons fresh thyme leaves
09 - 2 bay leaves
10 - 1 tablespoon Worcestershire sauce
11 - Salt and freshly ground black pepper to taste

→ Topping

12 - 1 baguette, sliced into 1/2-inch thick rounds
13 - 2 cups Gruyère cheese, grated
14 - 1/2 cup Parmesan cheese, grated

# How To Make:

01 - In a large Dutch oven over medium heat, melt the butter with olive oil. Add the sliced onions and sugar. Cook, stirring frequently, until onions are very soft and deeply caramelized, about 40 to 45 minutes.
02 - Add the minced garlic and cook for 1 minute until fragrant.
03 - Pour in the wine, scraping up any browned bits from the bottom of the Dutch oven. Simmer for 2 to 3 minutes until slightly reduced.
04 - Add the beef broth, thyme, bay leaves, and Worcestershire sauce. Bring to a simmer, reduce heat, and cook uncovered for 20 to 30 minutes. Season with salt and pepper to taste. Remove and discard bay leaves.
05 - While soup simmers, preheat oven broiler. Arrange baguette slices on a baking sheet and toast under the broiler until golden, about 1 to 2 minutes per side.
06 - Ladle soup into oven-safe bowls. Top each with a toasted baguette slice and a generous handful of Gruyère cheese.
07 - Place bowls on a baking sheet and broil until cheese is melted and bubbling, 2 to 4 minutes.
08 - Transfer bowls carefully to serving plates and serve immediately, garnished with fresh thyme if desired.

# Cooking Tips:

01 -
  • The caramelization happens right in your Dutch oven, meaning one less pan to babysit and clean.
  • That moment when the melted cheese gets bubbly under the broiler is basically edible comfort in its purest form.
  • It tastes like you spent hours cooking when you really just needed some patience and a wooden spoon.
02 -
  • Caramelization is not negotiable here, no matter how tempting it is to crank the heat to finish faster. I learned this the hard way by trying to rush it and ended up with bitter, burned onions instead of that deep golden sweetness.
  • Toasting the baguette separately instead of floating it raw in the broth changes everything, keeping it crispy rather than soggy and giving you that crucial textural contrast.
  • The soup actually tastes better the next day when the flavors have settled and deepened, so don't hesitate to make it ahead and reheat it gently before broiling with cheese.
03 -
  • Buy a block of Gruyère and grate it yourself, because pre-shredded cheese has anti-caking agents that prevent it from melting into that smooth, bubbling dream state you're after.
  • The secret to not having a burnt bottom layer of onions is to stir more often than feels necessary in those final 15 minutes of caramelization, scraping that wooden spoon along the bottom every couple of minutes.
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