French Onion Soup

"Have y’all ever made caramelized onions? They have such a unique flavor, and they’re really not hard to make at all. Caramelized onions are actually one of my favorite toppings for toasted sandwiches. Have you ever made a grilled cheese sandwich with some caramelized onions in there? (Hint: Do it.) Aside from caramelizing the onions until they are deep brown in color, the other key to a good French Onion Soup is the topping. I used a combination of Swiss and Gruyere cheeses. Both types of cheese melt well, and Gruyere has a noticeably nutty flavor. This nuttiness combined with the sweet caramelized onions is a match made in heaven. Seriously! Oh, sourdough. I almost forgot to mention that I always use sourdough when making French Onion Soup. The slightly sour taste just helps balance out the sweet caramelized onions."