I used to work at a French bistro that served the best onion soup I’ve tasted. Here is that recipe..

[Michie]

Ingredients

• 2 tablespoons extra-virgin olive oil
• 2 large onions, halved and thinly sliced (7 cups)
• 2 leeks, whites and light green parts only, thinly sliced
• 1 cup thinly sliced shallots (2 large)
• Kosher salt
• 5 garlic cloves, minced
• 3 tablespoons tomato paste
• 1 tablespoon herbs de Provence
• 1 bay leaf
• 1 cup dry red wine
• 1/4 cup sherry vinegar
• 8 cups beef stock or low-sodium broth
• Freshly ground pepper
• 1 stick unsalted butter, cut into chunks
• 12 baguette slices, cut 1/2 inch thick
• 4 ounces Gruyère cheese, shredded (1 cup)
• Finely chopped thyme, for garnish

Instructions

Continued below.
https://andrewzimmern.com/recipes/the-best-french-onion-soup/

 

[Michie]

This could be used during Lent as well.

 

[Anhelyna]

That does look good - but I [ and Eastern Catholics ] can't make that till after Pascha.

I'm going to copy that recipe down and keep it

 

[WarriorAngel]

I am hungry now. lol

 

[Michie]

I just noticed the beef broth. Maybe not so good for lent. Phht!

 

[WarriorAngel]

I just noticed the beef broth. Maybe not so good for lent. Phht!

I think bone broth is acceptable.
I once read flavoring is different than actual consuming meat.
Meat broth ok