Looks great, I love that stuff. Never could get it right myself. Got a recipe to share?
Melt half a stick of butter, low heat
Add 3 pounds of thinly sliced sweet onions and stir to cover with butter. Cover cast iron pot and let simmer about 15 minutes.
Remove cover and turn heat to medium/low and stir frequently for about 40 mins until onions are caramelized
Add salt/pepper/thyme to taste, 1 cup dry white wine and 8 cups of beef stock.
Simmer on medium for 40mins or so.
Put toasted slices of baguette in crock, fill with soup. Cover with cheese and broil. Most recipes call for gruyere cheese but I like provolone cheese and broil for a few minutes. All done.
Sometimes I make beef stock by cooking down beef bones for a day, sometimes I just use store bought beef stock.