Try this homemade Rosti-Filled Onions recipe the whole family will love. Made with onions, olive oil, potatoes and coarse grain mustard. Easy step-by-st…
This Rosti-Filled Onions relies on simple, everyday ingredients such as olive oil, large potatoes, grated, coarse grain mustard and butter. 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's versatile enough for an easy weeknight dinner yet satisfying enough for guests at the weekend. Serve it with your favorite sides, and keep any leftovers for a quick meal the next day.
Updated Jun 30, 2026