Cacio e Pepe Mashed Potato Balls (Crispy & Cheesy)

These cacio e pepe mashed potato balls take everything I love about creamy mashed potatoes and turn them into crispy, golden little bites. They’re packed with Pecorino Romano and freshly cracked black pepper, then fried until the outside is crunchy and the center is soft and fluffy.

If you love cacio e pepe, you already know how good the combination of salty Pecorino Romano and black pepper can be. Now imagine those flavors mixed into mashed potatoes and fried until golden brown.

I love these as a fun Thanksgiving side dish, but they’re also perfect as an appetizer or a creative way to use leftover mashed potatoes after the holidays.

What Are Cacio e Pepe Mashed Potato Balls?

Cacio e pepe is a classic Roman pasta dish built around two simple ingredients: Pecorino Romano cheese and black pepper.

For this recipe, I’m taking that same flavor combination and mixing it into mashed potatoes instead of pasta.

The potatoes are combined with grated Pecorino Romano, plenty of freshly cracked black pepper, flour, and cornstarch, then shaped into golf ball-sized portions and fried in olive oil.

The result is a crispy exterior with a fluffy, cheesy center.

They’re not traditional cacio e pepe, but they’re inspired by those familiar flavors.

Ingredients You’ll Need

Golden potatoes: I like using golden potatoes because of their naturally creamy texture. They mash beautifully and give the inside of these potato balls a soft, fluffy consistency.

Pecorino Romano: This is the star of the recipe. I use about 75 grams of grated Pecorino Romano in the potato mixture, plus more for finishing. It brings that salty, sharp flavor that’s essential to cacio e pepe.

Freshly cracked black pepper: You can’t have cacio e pepe without black pepper. I use a generous amount, around 40–50 cracks from my pepper mill, and finish the fried potato balls with even more.

All-purpose flour: Flour helps give the potato mixture enough structure to hold together when shaped and fried.

Cornstarch: Cornstarch works alongside the flour to help the potato balls hold their shape and develop a crisp exterior.

Salt: Season to taste, keeping in mind that Pecorino Romano is already quite salty.

Olive oil: I use olive oil for frying. The oil should be heated to 375°F before adding the potato balls.

How to Make Cacio e Pepe Mashed Potato Balls

1. Boil the Potatoes

Start by boiling the golden potatoes until they’re fork-tender and soft enough to mash.

Drain them thoroughly and let them cool until they’re comfortable to handle.

Once cooled slightly, peel the potatoes and mash them until smooth. Try not to leave any large chunks.

2. Add the Pecorino Romano and Black Pepper

To the mashed potatoes, add about 75 grams of freshly grated Pecorino Romano and a generous amount of freshly cracked black pepper.

I usually go with around 40–50 cracks of black pepper because I want that peppery flavor to really come through.

Add the flour and cornstarch, then mix until the ingredients are evenly combined and the mixture is firm enough to shape.

Taste for seasoning only if the mixture is safe to sample, and adjust the salt as needed.

3. Shape the Potato Balls

Using your hands, roll the potato mixture into golf ball-sized portions.

You should get approximately 15–20 potato balls, depending on the size of your potatoes and how large you roll them.

Try to keep them relatively uniform so they fry evenly.

4. Fry Until Golden and Crispy

Heat olive oil in a deep, heavy-bottomed pot to 375°F.

Carefully lower the potato balls into the hot oil, working in batches so you don’t overcrowd the pot.

Fry for approximately 2–4 minutes, or until the outside is golden brown and crispy.

Use a slotted spoon to remove the potato balls and transfer them to a wire rack or paper towel-lined plate to drain.

5. Finish with More Pecorino and Black Pepper

While the potato balls are still hot, transfer them to a serving bowl and finish with another generous grating of Pecorino Romano and a few more cracks of black pepper.

Serve immediately while the exterior is crispy and the center is still warm and fluffy.

Can You Make These With Leftover Mashed Potatoes?

Absolutely, and it’s one of my favorite ways to give leftover mashed potatoes a second life.

The key is making sure the mashed potatoes aren’t too loose or watery. If your leftovers contain a lot of milk, cream, or butter, the mixture may need additional structure to hold together during frying.

Start with cold mashed potatoes, add the Pecorino Romano and black pepper, and adjust the flour and cornstarch as needed until the mixture can be rolled into balls.

Because leftover mashed potatoes vary so much in consistency, the exact amount of flour and cornstarch may need to change.

I recommend frying one test ball first to make sure the mixture holds together before cooking the entire batch.

Why These Are Perfect for Thanksgiving

Mashed potatoes are already a Thanksgiving staple, but these crispy potato balls are a fun way to serve something a little different.

They have all the comforting flavor of mashed potatoes, with the added crunch of a fried exterior and the salty, peppery bite of Pecorino Romano.

I especially love the idea of serving them as an appetizer while everyone is waiting for dinner. They’re easy to pick up, great for sharing, and a fun addition to a holiday spread.

And if you have leftover mashed potatoes the next day, you already have the starting point for another batch.

Frequently Asked Questions

Can I make mashed potato balls with leftover mashed potatoes?

Yes. Leftover mashed potatoes work well, but the consistency matters. If they’re particularly creamy or loose, you may need to adjust the flour and cornstarch so the balls hold their shape.

Why are my mashed potato balls falling apart?

The potato mixture may contain too much moisture, or the oil temperature may be too low. Make sure the potatoes are well drained and the mixture is firm enough to shape before frying.

Can I use Parmigiano instead of Pecorino Romano?

You can, but Pecorino Romano is what gives these potato balls their classic cacio e pepe flavor. Parmesan is generally milder and less salty.

Can I bake these instead of frying them?

You can experiment with baking or air frying, but the exterior will be different from the original fried version. I prefer frying for the crispest result.

What kind of potatoes work best?

I like golden potatoes because they have a creamy texture and mash easily. Yukon Gold potatoes are a great choice.

Crispy Shell. Fluffy Center. Cheesy AF.

I’m convinced mashed potatoes are one of the best parts of Thanksgiving. But you know what’s even better? Taking those mashed potatoes, loading them up with Pecorino Romano and freshly cracked black pepper, rolling them into little balls, and frying them until they’re golden and crispy.

These are basically cacio e pepe meets mashed potatoes, and I’m not sure it gets much better than that. Serve them as a Thanksgiving side, put them out as an appetizer, or make a batch with leftover mashed potatoes the next day. Either way, don’t be surprised when they’re the first thing gone.

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