Great to hear from Maria again. How are the temperatures in Zakynthos?
Kathy in Fl, there are a number of recipes on the message boards for French Onion Soup. I have tried this one, posted by Jay and it is gooood:
Sylvia <Scotland>

Jay's French Onion Soup
6 cups onions, peeled and sliced
1/4 cup butter
4 cups beef broth
1 tsp. sugar
1/4 cup dry white wine
2 tsp. Worcestershire sauce
Salt and pepper to taste
6 - 8 slices French bread, toasted and cut into 1-inch cubes
6 - 8 slices Swiss or mozzarella cheese

Sauté onions in butter until tender. Add beef broth, sugar,
wine, Worcestershire sauce and salt and pepper. Bring to a
boil, then reduce heat and cook over medium heat for 15 -
20 minutes. Pour into ovenproof bowls and add bread cubes
to each bowl. Place 1 slice of cheese over each bowl of soup.
Bake in the oven for 10 minutes at 350 degrees until cheese
is melted and golden brown.

The Skinny: Use fat free beef broth. We also understand
that you can substitute and equal measure of apple cider
for the white wine.

http://www.nancyskitchen.com