How to Make French Onion Soup [ Easy Recipe by Lounging with Lenny ]

beef broth

🥗Healthier: vegetable broth

💰Cheaper: chicken broth

Vegetable broth is lower in calories and suitable for vegetarians.

gruyère cheese

🥗Healthier: part-skim mozzarella

💰Cheaper: cheddar cheese

Part-skim mozzarella has fewer calories, while cheddar is often less expensive.

Slice 4 big yellow onions thin and set aside.

Slice French baguette into 1 inch thick slices.

Drizzle baguette slices with olive oil and season with salt and pepper.

Place baguette slices on a baking sheet and toast in a preheated 350°F oven for approximately 18 minutes.

Preheat a pan to medium-high heat.

Add 3 tablespoons of unsalted butter and 2 tablespoons of vegetable oil to the pan.

Add the onions to the pan and season with salt.

Cook the onions for about 30 minutes, stirring occasionally, until caramelized.

Pour in 2 cups of dry sherry wine and reduce by 75%.

Add a couple strings of thyme and 7 cups of beef stock to the pan.

Season the soup with salt and pepper, cover with a lid, and lower the heat to cook for 30 minutes.

Pour the soup into bowls, place crostini on top, and add 2 slices of aged Swiss cheese and grated parmesan cheese.

Broil in the oven on high for 5 to 8 minutes until the cheese is golden brown.

Cooking Techniques

Equipment Needed

Spice Level:

Allergens