Crock Pot French Onion Soup

5 from 12 votes

Crockpot French Onion Soup is easy to make and everyone will love the rich broth. Each bowl is topped with a cheesy baguette slice.

Prep Time45

Cook Time6 10

Total Time6 55

Course: Soup

Cuisine: American

Servings:

Cost: $13.62, $2.27 per Servings

Place 3 pounds sweet onions sliced into approximately ¼-inch thick slices, 3 tablespoons melted butter, and 2 teaspoons brown sugar in a large non-stick saucepan.
Stir together and cook over medium low heat until the onions are brown and caramelized (approximately 30-45 minutes). Stir frequently during this time so that the onions do not burn at the bottom of the pan.
Transfer the caramelized onions to a 6-quart slow cooker. Add 1 teaspoon salt, 1 teaspoon pepper, 1 teaspoon dried thyme leaves, 1 bay leaf, 6 cups beef broth, and 1 tablespoon white dry wine. Stir to combine.
Cover and cook on low for 6-8 hours or on high for 3-4 hours.
Meanwhile, slice 1 French baguette (12 ounces) into approximately 1-inch thick slices. Arrange the slices on a baking sheet and bake at 350 degrees F for 5-7 minutes until lightly browned.
Ladle the soup into oven-safe bowls. Top each bowl with 2-3 baguette slices and approximately ¼ cup shredded Asiago cheese.
Place the bowls on a baking sheet and broil for 3-5 minutes until the cheese has melted and is slightly brown.Serve immediately while warm and enjoy!

Refrigerate the leftover soup in an airtight container for up to 5 days.