Slow Cooker French Onion Soup – Rich & Flavorful!

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.

Place onions, butter, and brown sugar in the slow cooker and set to sauté.

Cook over medium-low heat until onions are brown and caramelized, about 30 to 45 minutes.

If not using a digital slow cooker, sauté in a pan and then transfer to the slow cooker.

Add salt, pepper, thyme, bay leaf, beef broth, and white wine to the slow cooker.

Cover and cook on low for 6 to 8 hours or high for 3 to 4 hours.

Bake baguette slices at 350°F for 5 to 7 minutes until browned.

Spoon the soup into a bowl, top with baguette, and then top with 1/4 cup of shredded cheese.

Place bowls on a baking sheet and broil for 3 to 5 minutes until cheese is melted and slightly browned.

Serve immediately.

Cooking Techniques

Equipment Needed

Spice Level:

Allergens