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Dinner · Part 1 of 3: Ingredients

Cheddar Lava Potato Volcano with Crispy Pancetta

A towering mashed potato volcano in a cast-iron skillet with molten cheddar cheese sauce overflowing from the center.
Prep
Cook
Total
Serves
4
Includes 5 min resting

This cheddar lava potato volcano turns mashed potatoes into a centerpiece. A towering cone of buttery, riced Russets is broiled until the ridges crisp, then drenched in molten sharp cheddar sauce that flows like lava.

Crispy pancetta pieces sizzle around the base, adding salty, meaty crunch. It's comfort food with drama—perfect for a weeknight dinner or a party side that will get all the attention.

Mashed potatoes are the ultimate comfort food, but this version takes them to a new level. The potatoes are riced until fluffy, then sculpted into a volcano shape in a cast-iron skillet.

A velvety cheddar sauce, heated to 185°F (85°C), is poured into the crater and flows down the sides, creating a molten lava effect. Crispy pancetta adds a savory contrast. This dish is as fun to make as it is to eat, and it's sure to become a favorite.

Ingredients

Makes one 5-inch volcano · serves 4
  • 600 g baked Russet potatoes
  • 80 g Normandy butter
  • 100 ml warm heavy cream
  • 150 g sharp cheddar, grated
  • 120 ml whole milk
  • 60 g diced pancetta
  • 2 tbsp sliced scallion greens
Contains: milk

Why this recipe works

Ricing the baked potatoes creates an ultra-smooth, lump-free texture that holds its shape when sculpted. The butter and warm cream are folded in gently, keeping the mash light and airy rather than dense and gluey.

Ready to start cooking right away??? Jump to Part 2 ? Step-by-Step Method ?

Broiling the peaks adds a crisp, golden crust that contrasts with the creamy interior, making every bite interesting.

The cheddar sauce is made with sharp cheddar and whole milk, whisked until velvety smooth. Heating it to 185°F (85°C) ensures it's fluid enough to pour like lava but thick enough to coat the potato ridges. The pancetta, sizzled in the hot skillet, provides a salty, crunchy counterpoint that balances the richness.

Notes and substitutions

Use baked Russet potatoes for the fluffiest texture; they have less moisture than boiled potatoes, which helps the volcano hold its shape.

Normandy butter, with its high fat content, adds a luxurious richness, but any good unsalted butter works. Warm the cream before adding it so the potatoes stay hot and absorb it easily.

Sharp cheddar gives the sauce a bold flavor; feel free to use a mix of cheeses like smoked gouda or Monterey Jack. The pancetta is diced and cooked in the hot skillet after broiling, so it doesn't need extra oil. For a vegetarian version, omit the pancetta and add a sprinkle of smoked paprika for a hint of smokiness.

  • Normandy butter: Use any high-quality unsalted butter; the richness is key.
  • sharp cheddar: Smoked gouda or a mix of cheddar and Monterey Jack works well.
  • pancetta: Thick-cut bacon, diced, can replace pancetta; cook until crisp.

Equipment

  • ricer or food mill
  • large cast-iron skillet
  • medium saucepan
  • whisk
  • spatula
  • chef's knife
  • cutting board

Coming up in Part 2: the method

  1. Build the Base · 2 stepsRice the potatoes · Sculpt the volcano
  2. Melt and Broil · 3 stepsMake the cheddar sauce · Simmer the sauce · Broil the potato peak
  3. Lava and Finish · 3 stepsSizzle the pancetta · Pour the lava · Garnish and serve

Up next · Part 2 of 3

8 steps · 30 min of cooking · what to look for at each stage

Step-by-step instructions (Part 2)