Chase away the cool weather with this savory Crock Pot French onion soup. It's slow cooked, then ladled into bowls and topped with cheesy bread, then broiled to delicious perfection!
Place sliced onions in the slow cooker. Pour in butter and toss to coat. Add bread cubes, then pour enough broth in to cover. Stir well. Add sherry and a sprig of thyme, if using. Add additional broth to cover if needed.
Cover and cook for low for 10-18 hours, or high for 4-7 hours, or until onions are soft and cooked through. Stir occasionally. Remove thyme sprigs once soup is cooked.
Shortly before serving, preheat oven to broil. Broil slices of french bread for 2 minutes on each side.
Option 1:
Ladle soup into bowls and add a piece of the broiled bread. Top bowls with cheese, and pop under the broiler. Heat until cheese is browned and bubbling and serve.
Option 2:
Sprinkle each piece of bread with cheese and broil for 1 minute.
Ladle soup into bowls, top with cheesy bread, and serve.
Garnish with thyme leaves or chopped parsley if desired.
Notes
*can substitute Swiss cheese, gouda cheese, or 1 ½ cups shredded mozzarella plus ½ cup parmesan cheese in place of the two types of cheese.