Warm up with this hearty Easy Onion Soup recipe. Made with onions, butter, condensed beef broth and Swiss. Easy step-by-step instructions included.
This Easy Onion Soup relies on simple, everyday ingredients such as large onions, butter or margarine, grated parmesan cheese and minced parsley. It comes together quickly and makes 4 servings, at about 238 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