Last updated: October 23, 2026
Potato waffles are what you get when cold leftover mashed potatoes meet a hot waffle iron, with crackly golden edges and a soft, fluffy middle.
This version takes about 35 minutes from fridge to plate, and the full recipe card is waiting below the post.
How to Make Potato Waffles From Mashed Potatoes
The Short Answer
To make potato waffles, stir cold mashed potatoes together with eggs, flour, shredded cheddar, green onions, and a few simple seasonings until you have a thick, scoopable batter. Spoon about 1/2 cup into a hot, well-greased waffle iron and cook for 5 to 7 minutes, until the waffle is deep golden and crisp.
That is really all there is to it, because mashed potatoes already bring the moisture, starch, and flavor. The rest of this post walks you through each stage so you can cook the whole recipe without ever scrolling to the card.
Ingredients You Need
Each batch of 8 waffles uses 3 cups of cold mashed potatoes, 2 large eggs, and 1/2 cup of all-purpose flour. The flavor comes from 1/2 cup of shredded sharp cheddar cheese, 2 tablespoons of sliced green onions, 1/2 teaspoon of garlic powder, 1/2 teaspoon of kosher salt, and 1/4 teaspoon of black pepper.
You also need cooking spray or melted butter to grease the waffle iron, and that part matters more than you might think. Mashed potatoes are sticky, so a dry iron is the number one reason potato waffles tear apart.
Choosing the Right Mashed Potatoes
Plain, creamy mashed potatoes made with butter and a splash of milk work best. If you are starting from scratch, about 2 pounds of Russet potatoes will give you roughly 3 cups once boiled and mashed, and Yukon Gold potatoes work nicely too.
Skip any leftovers that are loose or soupy, since extra liquid keeps the waffles from crisping. If your mashed potatoes were already well seasoned, taste a small spoonful first and cut back on the kosher salt.
Mixing the Batter
Add the cold mashed potatoes to a large bowl and break them up with a fork. Stir in the eggs, flour, cheddar, green onions, garlic powder, salt, and pepper until no dry flour remains.
The batter should look like a thick, sticky dough that holds a scoop rather than pouring like pancake batter. If it is too wet to hold its shape, stir in 1 more tablespoon of flour, though the amounts above are right for most mashed potatoes.
Cooking Potato Waffles in the Waffle Iron
Heat and Grease the Iron
Preheat your waffle iron to medium-high, and set your oven to 200°F with a wire rack on a baking sheet inside. The oven keeps finished waffles warm and crisp while you cook the rest.
Brush or spray both plates generously with cooking spray or melted butter before every batch. This is the one step you do not want to rush.
Scoop and Close
Spoon about 1/2 cup of batter onto the iron for each waffle, spreading it gently toward the edges with the back of the spoon. Close the lid and press down lightly for a moment, then leave it alone.
The batter will not rise like a traditional waffle batter, so you do not need to leave extra room. A thick, even layer gives you the best crust.
How Long to Cook Potato Waffles
Cook each batch for 5 to 7 minutes, until the waffle is deep golden brown and the steam coming from the iron slows down. Resist opening the lid during the first 4 minutes, because the waffle is still fragile and will split if you pull it apart too soon.
If a waffle sticks when you lift the lid, give it another minute. A fully cooked potato waffle releases easily.
Keeping Waffles Crisp Between Batches
Move finished waffles to the rack in the 200°F oven rather than stacking them on a plate. Stacking traps steam and turns the crust soft within minutes.
An iron that makes two waffles at once needs four rounds to finish all 8, so plan on about 25 minutes of cooking time.
Tips for Crispier Potato Waffles
Start With Cold Potatoes
Cold mashed potatoes are firmer and drier than warm ones, which helps them hold together in the iron. Straight from the fridge is ideal, and per USDA food safety guidance, cooked potatoes should go into the refrigerator within 2 hours of cooking.
Grease More Than You Think
A light mist is not enough for a starchy batter like this one. Coat both plates well and re-grease between every batch so each waffle lets go cleanly.
Let the Iron Fully Preheat
A hot iron sets the outside of the waffle quickly, so you can lift it out in one piece. If your iron has no temperature dial, wait for the ready light before you add any batter.
Do Not Skip the Flour
It is tempting to leave out the flour, but that 1/2 cup is what holds the waffles together. Without it the batter turns into a gummy mash that clings to the plates instead of crisping.
Potato Waffle Variations and Substitutions
Loaded Potato Waffles
Stir in 1/4 cup of crumbled cooked bacon and use chives in place of the green onions. The recipe card leaves the bacon out, so treat it as an optional add-in.
Gluten-Free Potato Waffles
Swap the all-purpose flour for the same amount of a 1-to-1 gluten-free baking blend. The batter will look nearly identical, and the waffles crisp up just as well.
Dairy-Free Potato Waffles
Use dairy-free shredded cheese, and make sure your mashed potatoes were prepared without butter and milk. Olive oil and unsweetened oat milk make a good base for the potatoes.
Sweet Potato Waffles
Mashed sweet potatoes work in the same amount, though they are softer and may need an extra minute in the iron. They pair beautifully with cinnamon in place of the garlic powder.
Herby Potato Waffles
Replace the green onions with 1 tablespoon of chopped fresh chives or parsley for a brighter, greener flavor. Fresh herbs are especially good when you plan to serve the waffles with eggs.
What to Serve With Potato Waffles
Breakfast Toppings
A fried egg with a runny yolk is the classic partner, since the yolk acts like a sauce. Sour cream with chives, warm applesauce, or a drizzle of maple syrup with crispy bacon all work well too.
Dinner Toppings
Potato waffles also make a fun dinner base. Try them under chili and shredded cheese, pulled pork with coleslaw, or creamy sausage gravy.
Easy Side Dish Idea
Cut a waffle into wedges and serve it next to roasted chicken or a green salad. The crisp edges soak up pan juices the way a good roasted potato does.
Sweet and Savory Serving Ideas
For a brunch spread, pair potato waffles with fresh fruit, sausage links, and a pot of hot coffee. The salty cheddar crust and a little maple syrup make a combination that tastes a lot like a breakfast hash with a sweet finish.
Storing, Freezing, and Reheating Potato Waffles
Storing in the Fridge
Let the waffles cool completely on a wire rack, then store them in an airtight container in the refrigerator for up to 3 days. That falls inside the 3 to 4 day window the USDA recommends for leftovers.
Freezing Potato Waffles
Freeze the cooled waffles in a single layer on a baking sheet for about 1 hour, then move them to a freezer bag. They keep well for up to 2 months.
Reheating for the Crispiest Crust
Reheat the waffles directly on a wire rack in a 400°F oven for 8 to 10 minutes from the fridge, or 10 to 12 minutes from frozen. A toaster works for single waffles, and the USDA recommends reheating leftovers until they reach 165°F.
Avoid the microwave if you can, since it steams the crust and leaves the waffles limp. If you only have a microwave, finish the waffle in a hot skillet for a minute per side to bring the crunch back.
The Story Behind Potato Waffles
Potato waffles have long been a freezer aisle staple in the UK and Ireland, where golden, pillowy squares are a classic with fried eggs and baked beans. The homemade version here is closer to a cross between a crispy hash brown and a savory waffle.
At heart, potato waffles belong to the same family as potato pancakes and latkes, which rely on the starch in potatoes to hold everything together. The waffle iron simply adds more surface area, which means more crunch in every single bite.
Making them from leftover mashed potatoes is also a smart way to use up holiday extras. A bowl of cold mashed potatoes from the night before becomes a brand new breakfast with almost no extra work.
Ready to cook? Use the recipe card below for the full ingredient list, step-by-step instructions, and nutrition information.
Crispy Potato Waffles
Crispy, golden potato waffles made from cold leftover mashed potatoes, eggs, flour, and sharp cheddar. They bake up crunchy outside and fluffy inside in about 35 minutes.
Ingredients
- 3 cups cold mashed potatoes
- 2 large eggs
- 1/2 cup all-purpose flour
- 1/2 cup shredded sharp cheddar cheese
- 2 tablespoons sliced green onions
- 1/2 teaspoon garlic powder
- 1/2 teaspoon kosher salt
- 1/4 teaspoon black pepper
- Cooking spray or melted butter, for greasing the waffle iron
Instructions
- Preheat your waffle iron to medium-high, and set your oven to 200°F with a wire rack on a baking sheet inside.
- Add the cold mashed potatoes to a large bowl and break them up with a fork.
- Stir in the eggs, flour, cheddar, green onions, garlic powder, salt, and pepper until no dry flour remains and the batter is thick enough to hold a scoop.
- Brush or spray both plates of the waffle iron generously with cooking spray or melted butter.
- Spoon about 1/2 cup of batter onto the iron for each waffle and spread it gently toward the edges.
- Close the lid and cook for 5 to 7 minutes, without opening it during the first 4 minutes, until the waffle is deep golden brown and releases easily.
- Move the finished waffle to the wire rack in the oven to stay warm and crisp, then re-grease the iron and repeat with the remaining batter.
- Serve hot with a fried egg, sour cream, or maple syrup.
Notes
Use plain, creamy mashed potatoes that are cold from the fridge. About 2 pounds of Russet potatoes makes roughly 3 cups mashed. If your batter is too wet to hold a scoop, stir in 1 more tablespoon of flour. Taste your mashed potatoes first and use less salt if they were already well seasoned. Store cooled waffles in an airtight container in the refrigerator for up to 3 days, or freeze for up to 2 months. Reheat on a wire rack in a 400°F oven for 8 to 10 minutes from the fridge or 10 to 12 minutes from frozen. Optional add-in: 1/4 cup crumbled cooked bacon.
Nutrition Information:
Yield:
4Serving Size:
2 wafflesAmount Per Serving: Calories: 340Total Fat: 16gSaturated Fat: 6gSodium: 780mgCarbohydrates: 38gFiber: 3gSugar: 3gProtein: 13g
Potato Waffles FAQ
Can you make potato waffles with instant mashed potatoes?
Yes, as long as you prepare them thick and chill them completely first. Use a little less liquid than the package calls for so the potatoes hold a scoop.
Why are my potato waffles falling apart?
The iron is usually not hot or greased enough, or the lid was opened too soon. Wait at least 4 minutes before lifting, and add 1 tablespoon of flour if your mashed potatoes were very moist.
Can I make potato waffles ahead of time?
Yes. Cook them fully, cool them on a rack, and refrigerate for up to 3 days or freeze for up to 2 months, then crisp them in a 400°F oven.
Can I use a Belgian waffle maker?
You can, but the deep pockets need extra grease and may take a minute or two longer. A standard shallow iron gives you the crispiest results.
Can I use frozen hash browns instead of mashed potatoes?
This recipe is built for mashed potatoes, and hash browns behave very differently in a waffle iron. Stick with cold mashed potatoes for the texture described here.
Why This Potato Waffle Recipe Works
Cold mashed potatoes already contain cooked starch, butter, and milk, so the batter needs very little to come together. That means you only add eggs and 1/2 cup of flour to turn them into a batter that holds its shape in the iron.
The eggs and flour act as the glue, while the shredded cheddar melts into the surface and browns into a lacy, crisp crust. Chilling the potatoes first keeps the batter thick enough to scoop rather than spread.
A hot, generously greased iron does the final job. It sets the outside quickly, so the waffle lifts out whole with a crisp shell and a soft, fluffy center.
The seasonings are kept simple on purpose. Garlic powder, green onions, salt, and pepper play well with butter-rich mashed potatoes without overpowering them, so the potato flavor stays front and center.
Make Potato Waffles Tonight
Potato waffles are one of the easiest ways to turn leftover mashed potatoes into something people actually fight over. Pull that bowl out of the fridge, heat up your waffle iron, and give the recipe card a try.
Once you have made them once, you will start making extra mashed potatoes on purpose.
Save the recipe card for your next holiday dinner, and share your favorite toppings with us after you try it. Whether you serve them with eggs at breakfast or chili at dinner, these waffles earn a permanent spot in your rotation.
