Crispy Home Fries With Red Onions and Roasted Poblano Pepper Recipe

Crisp on the outside, creamy in the middle, and packed with peppers, herbs, and onions.

Plate with two sunny side-up eggs, a pile of home fries, and a fork

Serious Eats / J. Kenji López-Alt

Why This Recipe Works

  • Par-cooking the potatoes ensures they fry up extra crisp.
  • Adding vinegar to the par-cooking water limits the breakdown of pectin, which helps the potatoes retain their shape as they soften.
  • Sautéing the onions and roasting the peppers separately gives them more flavor and allows the potatoes to stay crisp until the last moment.

asked folks on Twitter what, in their minds, is the difference between home fries and potato hash. Hoo boy, was that a can of worms. Most of the debate seems to be about what constitutes hash. Is it shredded and fried potatoes? (Those are hash browns, not hash, to me.) Should hash be smashed and cooked on a flat top? (That does sound delicious, but more like a potato pancake to me.) Are home fries distinct, while hash is more cohesive? Are home fries potatoes only, while hash has other stuff mixed in? Are home fries disks, while hash is cubes? Et cetera, et cetera.

We may never be able to satisfactorily come up with nomenclature that makes everyone happy here, so I'm not going to even bother trying. Instead, I'll go with my gut. To me, potato hash has relatively small cubes of potatoes, while home fries tend to be larger chunks (hash browns are shredded). Exactly where that hash/home fry divide lies may be up for debate, but it's the kind of debate everyone should immediately drop once crispy potatoes hit the table.

I know people—especially New Yorkers—have a thing for diners, and I sort of get it, but they really aren't my cup of tea (or should I say my cup of stale coffee?). I think my problem is really one of quality over concept. Fact is, most diners just aren't that good. Frankly, I can deal with the crappy coffee, since I'm more of a tea drinker anyway. I'll put up with fried factory-farmed eggs, even with the inevitable runny whites or made-from-powder Hollandaise on top. There's a spot in my heart for the squishy softness of toast made with highly processed white bread. I can even tolerate soggy bacon. The problem is the home fries. With rare exception, home fries at diners are not crisp.

The vast majority of the time, short-order cooks will chop up a case of potatoes and toss them raw onto the back of a flat top greased with butter (or, frequently, butter-flavored shortening), where they sort of steam. Sure, they give them the occasional flip and toss. If they're really good, they may even pull out a small pile to the hotter part of the griddle to lightly crisp before serving, but even home fries that are crisped like this end up softening and turning soggy by the time the plate makes it to your seat at the counter. In the worst cases, the potatoes are soggy on the outside and still borderline raw in the center (and, in my experience, there's a good 50% chance that you'll end up with these worst-case potatoes).

Every bite of soggy, greasy potatoes at a diner is a reminder of what great home fries can be. Every trip to the diner is like a unicorn hunt—we're chasing those perfect, crisp home fries, but rarely catch more than a glimpse of them.

Here's the good news: You don't even have to leave home to catch that unicorn.

The Potatoes

The basic steps I follow to make these home fries are almost identical to the rules I set out in my guide to making potato hash. For hash, I tend to prefer larger russet or Yukon Gold potatoes, whereas for home fries—and this is purely a stylistic choice—I like to use smaller new potatoes with their peel intact, giving each chunk a bit of flavorful skin.

I start by boiling the new potatoes in water that's been spiked with vinegar and salt. Boiling potatoes before frying them is an essential step to getting maximum crispness. Boiling causes starch granules in the potatoes to swell and burst. When the potatoes are subsequently drained and slightly cooled, that gelatinized starch retrogrades and forms a crystalline structure.* That new structure is far more conducive to dehydration and crisping than the raw potatoes, which allows you to build up a significant crisp layer as you fry them. The same process is what makes double-fried French fries retain their crunch, and is the secret to ultra-crispy roast potatoes.

*This is the exact same effect that makes bread go stale.

Why vinegar and salt? Well, salt is easy—that adds flavor. Vinegar I add for its chemical effects. Like all plant cells, potato cells are held together with pectin, a sort of carbohydrate glue. Pectin starts to break down at 183°F (84°C), and the potatoes start to soften. Let them cook for too long and they soften to the point of turning mushy or crumbly. On the other hand, don't cook them long enough and you won't burst enough starch granules, preventing the potatoes from crisping properly. Vinegar will actually affect the rate at which pectin breaks down, slowing it down and vastly increasing the window of time between perfectly cooked potatoes and overcooked potatoes. It's not totally necessary, but it makes things easier.

Once the potatoes are boiled and tender, I let them cool slightly and cut them into quarters before frying them in a skillet.

If I ordered home fries at a diner, I'd be perfectly happy with these potatoes on their own, but for me, home fries are never really complete without peppers and onions.

The Peppers

The easy way to add peppers and onions to your home fries is to simply slice 'em up, sauté them, then toss them all together with your potatoes. There's absolutely nothing wrong with that. But, having experimented with a number of pepper preparations, I'd suggest to you that dropping wimpy bell peppers in lieu of a fresh Poblano pepper, with its deeper flavor and hit of heat, is a good upgrade. An even bigger upgrade is to char that Poblano pepper directly over a gas flame or under a broiler to loosen its skin and add some smoky flavor, then cut it into strips (a.k.a. rajas, in Mexican Spanish).

Charring that pepper is not entirely necessary, but it will change your brunch guests' or family's reaction from "yum, these are good home fries, let's have them again sometime" to "I would like to get these home fries' phone number so that I might have the pleasure of its company again in the future, and I'm even willing to break the wait-three-days-before-calling rule."

Large slivers of red onions browning in saute pan

What about those onions? With hash, I tend to slice my onions quite thin so that they almost melt into the dish in between those little crispy chunks of potato. With heftier home fries, I prefer heftier onion slices, which I sauté until they're browned but not mushy, giving them a nice sweetness. Red onions are pretty and offer good flavor, but you can really use whatever onions you have on hand. I add some fresh thyme leaves to the onions at the end, which get their flavor into the oil—and, via the oil, into the rest of the dish—while retaining some fresh flavor.

Everything—the crispy potatoes and the peppers—goes back into the skillet for a final toss and a taste (don't forget your salt and pepper!), and the home fries are ready to go.

Overhead shot of breakfast plate with two fried eggs and pile of hash browns

June 2016

Recipe Details

Crispy Home Fries With Red Onions and Roasted Poblano Pepper Recipe

Active 35 mins
Total 40 mins
Serves 4 servings

Crisp on the outside, creamy in the middle, and packed with peppers, herbs, and onions.


  • 1 medium fresh Poblano pepper (optional; see notes)

  • 1 1/4 pounds (575g) small new or fingerling potatoes

  • Kosher salt

  • 1 tablespoon (15ml) distilled white vinegar

  • 1/4 cup (60ml) vegetable oil, divided

  • 1 small red onion, cut into thick slices

  • 2 teaspoons (about 4g) minced fresh thyme

  • Freshly ground black pepper

  • Small handful minced fresh cilantro or parsley


  1. If using, place Poblano pepper directly over the flame of a gas burner, turning with tongs until well charred on all surfaces. Alternatively, place on a foil-lined rimmed baking sheet directly under a preheated broiler and broil, turning occasionally, until charred on all sides, about 8 minutes. Wrap charred pepper in foil to trap steam, and set aside. When cool enough to handle, carefully remove skin from pepper (it should slip right off). Remove and discard stems and seeds. Cut into strips.

    Strips of green roasted poblano pepper on cutting board board next to chefs knife
  2. Meanwhile, place potatoes in a pot and cover with 2 quarts (2L) of cold water. Add 2 tablespoons (30g) kosher salt and vinegar. Bring to a boil over high heat and boil until potatoes are tender, about 5 minutes after they reach a boil. Drain. As soon as potatoes are cool enough to handle, split into quarters and toss with 1 tablespoon (15ml) vegetable oil in a bowl.

  3. To Finish: Heat 2 tablespoons (30ml) vegetable oil in a large nonstick or cast iron skillet over medium-high heat until shimmering. Add potatoes and cook, tossing, until crisp and golden brown on all sides, about 6 minutes. Return to bowl.

    Wooden spoon stirring golden chunks of crispy potatoes in cast iron skillet
  4. Add remaining tablespoon (15ml) oil to skillet and add red onion. Cook, tossing occasionally, until softened and lightly browned, about 6 minutes. Add thyme and cook, stirring, until fragrant, about 30 seconds. Return potatoes to skillet and add roasted pepper strips, if using. Toss to combine and season to taste with plenty of salt and pepper. Add cilantro or parsley and toss to combine. Serve immediately.

    Saute pan filled with strips of green poblano pepper, red onion, and chunks of golden brown potato


The recipe can be prepared through the end of step 2 before completing. Store the roasted chiles and the parboiled potatoes in the refrigerator for up to 3 days before continuing.

I love the flavor of roasted Poblano pepper strips in this dish, but it adds quite a bit of prep time, and the home fries will be delicious even without them. If you decide not to roast the pepper, you can either omit it completely or simply slice a Poblano or bell pepper and sauté it along with the onion in step 4.

Nutrition Facts (per serving)
257 Calories
14g Fat
31g Carbs
3g Protein
Show Full Nutrition Label Hide Full Nutrition Label
Nutrition Facts
Servings: 4
Amount per serving
Calories 257
% Daily Value*
Total Fat 14g 18%
Saturated Fat 1g 5%
Cholesterol 0mg 0%
Sodium 1894mg 82%
Total Carbohydrate 31g 11%
Dietary Fiber 3g 11%
Total Sugars 2g
Protein 3g
Vitamin C 21mg 107%
Calcium 19mg 1%
Iron 1mg 4%
Potassium 590mg 13%
*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
(Nutrition information is calculated using an ingredient database and should be considered an estimate.)