French Onion Soup Recipe - How To Make Onion Soup - Slow Cooker Recipe

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.

Caramelize onions in a crock pot overnight with 1 stick of butter.

Use 6 onions, including 3 sweet onions and 3 yellow onions.

Add flour to the caramelized onions and stir.

Mix in Worcestershire sauce, garlic, thyme, rosemary, beef base, and burgundy wine.

Add 1 bay leaf and stir.

Cook mixture in the crock pot for 5-6 hours.

Plate the soup by placing a piece of French baguette at the bottom of each serving dish.

Ladle soup over the bread.

Top with another piece of French baguette and freshly grated Parmesan and gruyère cheese.

Broil in the oven for 4-5 minutes until cheese is bubbly.

Cooking Techniques

Equipment Needed

Spice Level:

Dietary

Allergens