For a rich and unctuous onion soup topped with melting cheese toasts. A classic from the French culinary archives.
Our version is super easy for those days you want something tasty without the fuss.
Method
Add the butter to a heavy based pan over a medium heat then add
the onions, a pinch of salt and a pinch of sugar, a few thyme
leaves then place a lid on and cook until the onions collapse and
become sweet and translucent,about 10 minutes then remove lid,
increase heat a little and cook until rich & golden.
Add the flour & cook out for a minute or so then pour the
broth over the onions & bring to a simmer skimming any fat from
the surface.
Reduce by half or until deep flavour is achieved, season to
taste.
Toast the bread in a frying pan until golden then top with
cheese.
Ladle the onion soup into heatproof bowls, top with the cheese
toasts & pop under a pre heated grill until the cheese is
bubbling & golden.