01 -
Melt butter in large stockpot over medium-high heat.
02 -
Add onions and cook for 30 minutes until caramelized, stirring every few minutes.
03 -
Add garlic and cook 2 minutes.
04 -
Stir in flour and cook 1 minute.
05 -
Add wine to deglaze, scraping bottom of pot.
06 -
Pour in stock, Worcestershire sauce, bay leaf, and thyme.
07 -
Bring to simmer, then reduce heat and cover, cook 10 minutes.
08 -
Remove bay leaf and thyme sprigs.
09 -
Season with salt and pepper.
10 -
Heat oven to 400°F.
11 -
Toast baguette slices 6-8 minutes.
12 -
Switch to broiler, fill oven-safe bowls with soup, top with bread and cheese, broil 2-4 minutes until cheese melts.