Creamy Smashed Potato Gratin (Printable View)

Golden smashed potatoes baked with cream, melted cheeses, and herbs for a rich, flavorful side dish.

# What You’ll Need:

→ Potatoes

01 - 3.3 lbs small Yukon Gold or baby potatoes
02 - 1 tablespoon olive oil
03 - Salt and freshly ground black pepper to taste

→ Cream Mixture

04 - 1.5 cups heavy cream
05 - 2 cloves garlic, minced
06 - 1 teaspoon fresh thyme leaves or 0.5 teaspoon dried
07 - 0.5 teaspoon fresh rosemary, finely chopped
08 - 0.5 teaspoon ground nutmeg

→ Cheeses

09 - 1 cup grated Gruyère cheese
10 - 1 cup grated mozzarella cheese
11 - 0.5 cup grated Parmesan cheese

→ Garnish

12 - 2 tablespoons fresh chives or parsley, chopped

# How To Make It:

01 - Preheat oven to 425°F. Line a large baking sheet with parchment paper.
02 - Place whole potatoes in a large pot, cover with salted water, and bring to a boil. Cook until fork-tender, approximately 15 to 18 minutes.
03 - Drain potatoes and let cool slightly. Transfer to the prepared baking sheet. Use a potato masher or the bottom of a glass to gently smash each potato to approximately 0.5 inch thick.
04 - Drizzle smashed potatoes with olive oil and season generously with salt and pepper. Roast in the oven for 20 minutes, or until edges are crisp and golden.
05 - In a small saucepan over low heat, combine heavy cream, garlic, thyme, rosemary, and nutmeg. Heat gently until just warmed and fragrant; do not boil.
06 - Arrange half the roasted smashed potatoes in a buttered baking dish. Pour over half of the cream mixture and sprinkle with half the Gruyère, mozzarella, and Parmesan.
07 - Layer the remaining potatoes, then top with the rest of the cream and cheeses.
08 - Bake in the oven at 425°F for 20 to 25 minutes, or until bubbly and golden brown on top.
09 - Let rest for 10 minutes before garnishing with fresh herbs and serving.

# Best Practices:

01 -
  • The edges get shatteringly crisp while the centers stay creamy and buttery, giving you textural contrast in every bite.
  • It's easier than traditional gratin but tastes like you spent hours layering thin slices of potato.
  • The aroma while it bakes is so intoxicating that people will appear in your kitchen asking what's cooking.
02 -
  • Don't skip the 10-minute rest after the final bake; rushing to serve means the gratin stays soupy and won't hold its shape on the plate.
  • If your cream mixture boils, it can separate—keep the heat low and your attention on it while the potatoes roast to avoid a grainy texture.
03 -
  • Don't peel the potatoes—those thin skins add texture and nutrients, and they disappear into the creaminess of the gratin.
  • The key to crispy edges is the initial roast before you add the cream; skipping or rushing this step means you lose the contrast that makes this dish special.
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