01 -
2 tablespoons olive oil.
02 -
1 pound beef short ribs.
03 -
4 large onions, thinly sliced.
04 -
4 cloves garlic, minced.
05 -
6 cups beef broth.
06 -
1 tablespoon balsamic vinegar.
07 -
1 teaspoon fresh thyme.
08 -
1 bay leaf.
09 -
Salt and pepper to taste.
10 -
4 slices French bread.
11 -
1 cup Swiss or Gruyère cheese, shredded.