Classic French Onion Soup Recipe: Step-by-Step Guide

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 6 large onions into julienne strips.

Heat 2 tablespoons of olive oil in a Dutch oven over medium-high heat.

Add sliced onions to the Dutch oven and sauté for about 40 minutes, stirring occasionally, until they are caramelized and brown.

Prepare bread by cutting it into small bite-sized pieces to make croutons.

Toss the bread pieces with olive oil and seasonings, then place in an air fryer to crisp up.

Once the onions are caramelized, deglaze with white wine and add beef broth.

Simmer the mixture for a few minutes to combine flavors.

Ladle soup into bowls, top with croutons, and sprinkle with Swiss and Parmesan cheese.

Serve hot.

Cooking Techniques

Equipment Needed

Spice Level:

Allergens