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A bowl of mashed potatoes topped with roasted garlic cloves, fresh rosemary, black pepper, and a drizzle of olive oil, served on a wooden board.
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Garlic Confit Mashed Potatoes Recipe

Garlic Confit Mashed Potatoes are the ultimate comfort side dish. Packed with roasted garlic, creamy Gruyere, and finished with rosemary-infused olive oil, these mashed potatoes are rich, cheesy, and unforgettable. Perfect for Thanksgiving, holidays, or cozy weeknight dinners.

Ingredients

For the Garlic Confit:

  • 2 heads of garlic peeled
  • 1 cup olive oil enough to cover the garlic cloves
  • 2 sprigs fresh rosemary

For the Mashed Potatoes:

  • 2 pounds red potatoes about 1 bag
  • ½ cup unsalted butter cubed
  • 1 ½ cups shredded Gruyere cheese
  • 1 ½ cups heavy cream plus more as needed
  • 3 tablespoons garlic confit from above
  • Salt and pepper to taste

Instructions

Garlic Confit:

  • Preheat your oven to 250°F.
  • Add the peeled garlic cloves to a small oven-safe pot or baking dish.
  • Cover the cloves with olive oil and add the rosemary sprigs.
  • Bake for 2 hours until the garlic is soft and golden.
  • Remove from the oven and set aside. Store any leftovers in a jar, ensuring the garlic is submerged in oil.

Mashed Potatoes:

  • Boil the red potatoes in a large pot of salted water until fork-tender (about 20-25 minutes).
  • Drain the potatoes and return them to the pot.
  • Add the cubed butter and let it melt.
  • Add the potatoes back in and mash until mostly smooth.
  • Add 3 tablespoons of garlic confit, mashing to combine.
  • Stir in the shredded Gruyere cheese using a spatula.
  • Pour in 1 cup of heavy cream and mash further to achieve a creamy consistency. If needed, add more cream, ¼ cup at a time, until your desired texture is reached.
  • Season with salt and pepper to taste.
  • Top the mashed potatoes with additional garlic cloves from the confit and drizzle with the rosemary-infused olive oil for extra flavor.