A mini-crock of French onion soup with deliciously rich, oniony, and beefy broth, a crispy crouton on top, and melted Gruyere cheese oozing over the sides – the classic comfort of French Onion Soup. But, deconstructing this soup and turning it into a comforting “grilled cheese” sandwich recipe creates a new concept and homemade favorite: French Onion…