How to make it

  • Make the topping: In a bowl, combine the breadcrumbs, melted butter, and a pinch of salt. Mix in the mustard and then the Parmigiano and parsley.
  • Prepare the gratin: Preheat oven 350. Rub shallow 2-quart gratin dish with butter, set aside.
  • Melt 2 TBS butter in a saucepan over medium heat. Add shallots and pinch of salt; cook, stirring frequently, until softened, limp and somewhat golden. Whisk together the cream, broth, and horseradish; add to the shallots. Season with salt and pepper, stir to combine, and take the pan off the heat.
  • Assemble the gratin: In a large bowl, combine the potato and sweet potato slices with salt, Parmigiano and the shallot cream. With a rubber spatula, mix gently but thoroughly and scrape into the prepared gratin dish, smoothing and pressing until evenly distributed.
  • Bake the gratin: Cover with the breadcrumbs. Bake until the crust is deep golden brown, the juices around the edges have subsided, and the potatoes are tender when pierced with a fork, about 1 hour.
  • Let it rest for 15-20 minutes before serving.

People Who Like This Dish 4
Reviews & Comments 0

Add a Link?

Post a link to another recipe or group by pasting the url into the box where you want it to show up. We'll do the rest.

Post Message or cancel

Maybe List
Hang onto this recipe

while I look at others.

Holding 0 recipes