Sweet Onion Potatoes Au Gratin

1. 1

   Heat a small skillet with the butter over medium heat.

2. 2

   Add the onions, season with salt ground thyme, bay leaf and cook until very soft and sweet and lightly caramelized, 20 minutes.

3. 3

   Season with salt and pepper, to taste, and discard the bay leaf.

4. 4

   While the onions cook, put the potatoes in a medium pot and cover with water.

5. 5

   Bring to a boil, then salt the water and cook to tender, 12 to 15 minutes.

6. 6

   Drain and return the potatoes to the hot pot.

7. 7

   Mash the potatoes with the cream and Parmesan and season with salt and pepper, to taste.

8. 8

   Preheat the broiler.

9. 9

   Arrange the mashed potatoes in individual gratin dishes or 1 shallow casserole.

10. 10

    Top the potatoes with the onions and Gruyere cheese.

11. 11

    Put them on a sheet pan and brown under a hot broiler until bubbly, about 2 minutes.

12. 12

    Remove from the oven and serve hot.

* Per serving · 4 servings · Values may vary.