Bistro French Onion Soup
A rich, savory and satisfying soup recipe, with caramelized red onions and savory seasonings simmered in a beefy broth. The pièce de résistance? Ooey, gooey melted Swiss and Parmesan cheese. Make the soup ahead and be ready for a quick supper. Just reheat and top with the toasted French bread and cheese.