Warm up with this hearty Sig's Red Onion Soup recipe. Made with red onions, oil, knorr and shiraz. Easy step-by-step instructions included.
This Sig's Red Onion Soup relies on simple, everyday ingredients such as grams red onions, or so vegetable stock, good pinch cayenne pepper and marjoram. It comes together quickly and makes 4 servings, at about 209 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