|
|
Heat the oil in a heavy sauce pan. Add the butter. When the butter has melted, add the onions and cook slowly, covered for 10 minutes.
Add the sugar, mustard, thyme and salt. Cook onions slowly until onions caramelize and turn to a rich brown color. Do not let them burn! This will take 45-60 minutes.
Add the wine and cook 5 minutes, still over low heat.
Add the stock, soy sauce and pepper. Check for seasoning. Simmer uncovered for 30 minutes.
To serve:
Toast the French bread slices until golden brown. Ladle the soup into
ovenproof bowls, add the toasted bread and cover with the cheese. Bake at
350° F. for 20 minutes.