Try this homemade Gratin of Potatoes with Sweet Onion and Thyme recipe the whole family will love. Made with heavy cream, thyme, russet potatoes and swe…
This Gratin of Potatoes with Sweet Onion and Thyme relies on simple, everyday ingredients such as quart heavy cream, finely chopped fresh thyme, russet potatoes and large sweet onion. It comes together quickly and makes 4 servings, at about 423 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