INGREDIENTS
2 tsp
olive oil
4 cups
thinly vertically sliced Walla Walla or other sweet onion
4 cups
thinly vertically sliced red onion
1/2 tsp
sugar
1/2 tsp
freshly ground black pepper
1/4 tsp
salt
1/4 cup
dry white wine
8 cups
less-sodium beef broth
1/4 tsp
chopped fresh thyme
8
slices French bread, cut into 1-inch cubes
8
slices reduced-fat, reduced-sodium Swiss cheese (such as Alpine Lace)