Warm up with this hearty Onion Soup Casserole(Original Recipe) recipe. Made with onion soup, onions, beef bouillon and bay leaf. Easy step-by-step instr…
This Onion Soup Casserole(Original Recipe) relies on simple, everyday ingredients such as envelopes onion soup, medium onions, cubes beef bouillon and bay leaf. It comes together quickly and makes 4 servings, at about 290 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