Warm up with this hearty Onion Soup Au Gratin(Low-Cal) recipe. Made with margarine, onions, onion and white pepper. Easy step-by-step instructions inclu…
This Onion Soup Au Gratin(Low-Cal) relies on simple, everyday ingredients such as margarine, chopped onions, of white pepper and french bread, toasted. It comes together quickly and makes 4 servings, at about 99 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