Ingredients
Instructions
- In a large Dutch oven, melt butter with olive oil over medium low heat.
- Add onions and thyme.
- Toss to coat.
- Slowly cook onions, tossing occasionally until some of the onions start to brown.
- Add sherry, beef broth, salt and pepper.
- Bring to a boil.
- Reduce heat and simmer for about 40 minutes.
- Top French bread with Mozzarella cheese slices; place in broiler.
- Broil until cheese is well melted.
- To serve ladle into bowl and top with a bread slice.