French Onion Soup

5 from 1 vote

Classic French Onion Soup is so incredibly flavorful and easy to make! Delicious caramelized onions swimming in a savory broth are topped with Gruyère cheese, a toasted slice of French bread, and fresh thyme. The best comfort food that you’ll make again and again!

Prep Time10

Cook Time1 30

Total Time1 40

Course: Soup

Cuisine: French

Diet: Gluten Free

Servings: servings

Author: Rena

Equipment

Chef's knife
cutting board
Pot or dutch oven

Ingredients

2.5 pounds yellow onions sliced into half-moons
2 tablespoons olive oil
6 cups low-sodium beef broth
2 teaspoon Worcestershire sauce
Kosher salt and pepper to taste
1 French baguette sliced
1 cup shredded Gruyère cheese
2 sprigs fresh thyme

Instructions

Heat 2 tbsp of the oil in a soup pot over medium heat. Add the sliced onions and cook, stirring occasionally, for 35-40 minutes, or until golden and caramelized.
Add the broth, Worcestershire sauce, salt, and pepper, and bring the soup to a boil. Reduce the heat and simmer for 30 minutes.
Meanwhile, preheat the oven to 325ºF and line a sheet pan with parchment paper. Arrange the baguette slices on the prepared sheet pan and sprinkle with the cheese. Bake for 12-15 minutes, or until the cheese melts.
Serve the soup with a cheesy baguette toast and garnish with fresh thyme.

Notes

Storing leftovers: Place any leftovers in an airtight container in the refrigerator for up to 3-5 days without the baguette on top. Reheat in the microwave or on the stovetop, and then top it with the cheesy baguette as instructed.
To freeze: Let the soup cool completely, then transfer it to a freezer-friendly container or bag, and freeze for up to 3 months. When you’re ready to eat it, thaw the soup in the fridge overnight, and then reheat it in the microwave or on the stovetop. Top with a cheesy baguette and serve!

Nutrition