Warm up with this hearty Microwave Potatoes Au Gratin Soup recipe. Made with water, onion, potatoes and vegetable bouillon. Easy step-by-step instructio…
This Microwave Potatoes Au Gratin Soup relies on simple, everyday ingredients such as hot tap water, finely chopped onion, grated sharp cheddar cheese and peppercorns. It comes together quickly and makes 4 servings, at about 464 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