French Fry Waffles Recipe

Stick your leftover french fries in the waffle iron for an awesome, crispy, pull-apart waffle snack.

By
J. Kenji López-Alt
Kenji Lopez Alt
Culinary Consultant
Kenji is the former culinary director for Serious Eats and a current culinary consultant for the site. He is also a New York Times food columnist and the author of The Food Lab: Better Home Cooking Through Science.
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Updated March 27, 2024
The author holds a French fry waffle up for the camera.

Serious Eats / J. Kenji López-Alt

Why It Works

  • Reheating fries in a waffle iron slowly crisps them up and compresses them so that they loosely cohere, which allows them to be pulled apart into crispy, nugget-like bites.

It's a rare occurrence 'round these parts that a pile of french fries will go unfinished, but what happens when they do? There's nothing much more depressing than discovering that what once was a heap of crisp-on-the-outside-fluffy-in-the-middle, potatoey treats has become a uniformly mushy, grease-laden mound of sadness. And that's really what old, soggy fries are.

What's a crispy potato lover to do? You could try reheating them in a hot oven. It works, but your fries come out a dry shadow of their former selves. You can refry them, which actually works spectacularly, but also requires that you heat up your fryer. You can do what I used to do: feed them to the pups as a treat.

But no more. For I have discovered what might be the absolute best way to reheat fries: in the waffle iron. It's certainly the best use for the waffle iron we've discovered since waffle pizza.

An open waffle iron, covered in a heap of fries.

Serious Eats / J. Kenji López-Alt

Conceptually, it's pretty similar to The Waffleizer's hash brown waffles: both are made with thin-cut potatoes pressed into a waffle iron. The end results, however, are vastly different.

The fries go in cold and get compressed into the waffle compartments where they begin by shedding some of their fat, then continue by frying in that fat. They take a little longer than you'd expect—10 to 15 minutes or so—but you'll know they're ready when every nook and cranny is fully crisped.

We served ours with a bit of the awesome chipotle mayonnaise from Just Mayo.

So what makes them so good you ask? What makes them so different from waffle hash browns?

Well, waffle hash browns are made from raw shredded potato, which means that there's still quite a bit of sticky starch on the surfaces of the shreds. When you waffle them, they form a cohesive solid; They need to be cut with a fork and knife, and they behave very much like regular hash browns, albeit with more crispy surface area.

French fries, on the other hand, are pre-cooked and have no such sticky starches on their surface. Quite the opposite in fact: they have greasy surfaces that don't want to stick together.

The waffle iron forces them to to a degree, but their cling is gentle, and just a little bit of pulling separates them into individual clusters of french fry nuggets.

A French fry waffle is pulled apart above a plate.

Serious Eats / J. Kenji López-Alt

They're sort of the monkey bread of the potato world. Or maybe the monkey bread of the waffle world. Or perhaps the monkey bread of that section of the Venn Diagram where waffles and potatoes overlap.

Don't you wish all waffle fries did this?

March 2014

Recipe Details

French Fry Waffles Recipe

Cook 25 mins
Active 2 mins
Total 25 mins
Serves 4 to 6 servings

Ingredients

  • 1 1/2 pounds leftover cold french fries, or thawed frozen french fries

  • Kosher salt

  • Mayonnaise or ketchup for serving

Directions

  1. Preheat a Belgian waffle iron according to manufacturer instructions. Add half of french fries and press down firmly to compress (If using a two-well waffle iron, fill both sides). Cook until completely crisp and golden brown, 10 to 15 minutes (if using a single well waffle iron, hold finished waffle on a rack set in a rimmed baking sheet in a 200°F [95°C] oven while you cook the second waffle). Season with salt and serve with mayonnaise or ketchup immediately.

    A finished French fry waffle, fully crisped and nicely browned.

    Serious Eats / J. Kenji López-Alt

Special Equipment

Waffle maker

Read More

Nutrition Facts (per serving)
357Calories
17gFat
48gCarbs
4gProtein
×
Nutrition Facts
Servings: 4 to 6
Amount per serving
Calories357
% Daily Value*
Total Fat 17g21%
Saturated Fat 3g13%
Cholesterol 0mg0%
Sodium 316mg14%
Total Carbohydrate 48g17%
Dietary Fiber 4g15%
Total Sugars 1g
Protein 4g
Vitamin C 5mg27%
Calcium 21mg2%
Iron 1mg5%
Potassium 665mg14%
*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.)

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