Warm up with this hearty Onion Soup recipe. Made with condensed onion soup, water, thin and Swiss cheese. Easy step-by-step instructions included.
This Onion Soup relies on simple, everyday ingredients such as condensed onion soup, soup can water, thin slices french bread and grated swiss cheese. It comes together quickly and makes 4 servings, at about 221 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.
It works as a light main on its own or as a starter alongside crusty bread, and it's just as good for a cozy night in as it is for feeding a crowd. Leftovers keep well, so it's a smart choice for meal prep too.
Updated Jun 30, 2026