Gratineed onion soup is an ultimate comfort food. Butter-soft, caramelized onions are cooked down into a rich, seasoned beef stock. Top it off with fresh garlic croutons and melted, bubbly Gruyere cheese and you have a rich soup, indeed. Add a small salad and a glass of wine to make it a meal. Found this recipe at About.com by Rebecca Franklin, posting for safe keeping as I love onion soup and for ZWT (French).