Spray a large cooking pot with olive oil. Add you chopped onions to the pot and toss lightly.
Cook onions on med/high heat for about 6-8 mins. or until the onions start to brown, make sure to stir often!
Add garlic, bay leaf, and thyme to your onions and cook uncovered, making sure to stir often, until starting to soften, 3 to 4 minutes.
Stir in your red wine, vinegar, Worcestershire sauce, and salt and pepper; turn the heat up a bit and simmer for 1 to 2 minutes.
Add your broth and being it to a boil. Reduce your heat to a simmer and cook an additional 5 minutes.
Toast your bread and add your cheese on top, toast until your cheese becomes bubbly.
Add your toast to the bottom of a bowl and pour your hot soup on top, serve warm.