Warm up with this hearty Soupe a L'oignon Gratinee/ Onion Soup "au Gra recipe. Made with brown onions, swiss cheese, butter and olive oil. Easy step-by-…
This Soupe a L'oignon Gratinee/ Onion Soup "au Gra relies on simple, everyday ingredients such as gr. brown onions (1/2 lb), gr. swiss cheese (3 oz), gr. butter (1 oz) and olive oil. It comes together quickly and makes 4 servings, at about 272 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