What is the bowl called you make french onion soup in?

There isn't a specific name for a bowl you make French onion soup in. It's typically made in a large pot or Dutch oven because you need the space to simmer the onions and broth.

When it comes to serving, French onion soup is often served in individual oven-safe bowls, typically made of ceramic or glass, so it can be broiled and topped with melted cheese.