To serve, ladle the soup into bowls, making sure each serving has a cheesy croûton. Serve immediately, before the croûton goes soggy. If cooking for vegetarians, the beef stock in this French ...
The most crucial component in a French onion soup is, not shockingly ... you're going to want to aim for slices between 1/8- to 1/4-inches thick. Where they end up on that spectrum is down ...
Season the soup with salt and pepper. Keeping the soup in the pan, top with the sliced bread and a sprinkle of cheese. Place under the grill until it turns brown and the cheese has melted.