This classic French Onion Soup recipe utilizes the slow cooker to achieve deeply caramelized, sweet onions that form the base of an aromatic beef broth.1 It is traditionally finished under the broiler with crunchy bread and melted Gruyère cheese.
French Onion Soup
Ingredients:
INGREDIENTS QUANTITY
Yellow onions, thinly sliced 3 pounds
Unsalted butter, melted 2 tablespoons
Olive oil 2 tablespoons
Balsamic vinegar 1/4 cup
Fresh thyme sprigs 2
Beef stock 8 cups
Shredded Gruyere cheese 1.5 cups
Salt and pepper To your liking
Brandy 1/3 cup (Optional)
Crunchy bread slices To serve