Mashed Potatoes au Gratin

  • Level: Easy
  • Yield: 8 to 10 servings
  • Total: 1 hr 5 min
  • Active: 20 min
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Ingredients

5 to 6 medium russet potatoes, peeled and cut into 1 1/2-inch chunks

3 cups chicken broth 

Nonstick cooking spray, for the baking dish

4 tablespoons unsalted butter 

2 shallots, minced 

1 clove garlic, minced 

1 cup half-and-half 

1 teaspoon kosher salt 

2 cups grated Gruyere

1 cup grated Parmesan

Directions

  1. Put the potatoes in a pot and cover with the chicken broth. Bring to a low boil over medium-high heat. Reduce the heat to low, partially cover and simmer until the potatoes are fork-tender, 15 to 20 minutes.
  2. Preheat the oven to 375 degrees F. Coat a baking dish with nonstick cooking spray.
  3. While the potatoes are cooking, heat the butter in a skillet over medium heat. Add the shallots and cook until translucent and tender, 7 to 8 minutes. Stir in the garlic and cook an additional minute.
  4. Transfer the potatoes and chicken broth to a large mixing bowl. Add the butter mixture and half-and-half. Use a handheld electric mixer or a potato masher to mash the potatoes until smooth and creamy. Stir in the salt, 1 cup of the Gruyere and 1/2 cup Parmesan.
  5. Transfer the mixture to the prepared baking dish and top with the remaining 1 cup Gruyere and 1/2 cup Parmesan. (The dish can be prepared to this point, covered and refrigerated until ready to bake.)
  6. Bake until the cheese is golden and bubbly, about 30 minutes.

Let's Get Cooking!

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Shelly M.

I first had these potatoes at my sisters house ( but had the recipe saved for awhile) omg these are to die for! Made these for my guests on Christmas Eve they were a hit! Love Katie’s recipes!!!

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