Ingredients :
- 4 large onions, sliced
- 2 tablespoons butter
- 1 teaspoon sugar
- 2 quarts beef broth, no sodium added
- ¼ cup sherry
- 2 sprigs fresh thyme
- 1½ teaspoons salt
- Pepper to taste
- Sliced bread of choice (or croutons)
- 8 ounces Gruyere cheese, sliced (Swiss cheese is a suitable substitute)
Preparation :
- In a 6-quart slow cooker, combine onions, butter, sugar, and salt. Cover and cook on high for 7 hours, or until the onions are soft and browned.
- Add beef broth, sherry, thyme sprigs, and pepper to your preference. Cover and cook on high for an additional hour.
- To serve, place sliced bread (or croutons) on the surface of the soup and top with sliced Gruyere cheese.
- Enjoy this effortless, slow-cooked version of French onion soup, bringing all the gourmet flavors of the restaurant classic right into your home kitchen.