Okay, real talk — if you’ve got a container of leftover mashed potatoes sitting in your fridge right now, you need to stop scrolling and go check on it, because I’m about to change your life. These Leftover Mashed Potato Pancakes are the reason I always make way too many mashed potatoes on purpose. Crispy on the outside, soft and cheesy on the inside, and honestly better than the original mash was the first time around.
I know, I know. Leftover mashed potatoes usually mean one of two things: a sad microwave reheat, or the compost bin. Neither of those is acceptable anymore. This recipe turns that half-empty bowl into golden, crackly little pancakes that taste like a cross between a potato pancake and a cheesy hash brown, and it takes maybe twenty minutes from start to finish.
Why You’re Going to Love These
I make a version of this every single time I have extra mashed potatoes, whether that’s after a big Sunday dinner, a holiday spread, or just a random Tuesday where I made too much on purpose (no shame). Here’s why they’ve earned a permanent spot in my rotation:
- They come together with five basic ingredients you probably already have
- The texture is unbeatable — crispy edges, fluffy middle
- You can dress them up or down depending on what you’re in the mood for
- They work for breakfast, lunch, or dinner, no questions asked
- Leftovers reheat beautifully, so you can double dip on the “leftover” thing
What You’ll Need
Here’s the thing about this recipe — it’s flexible. Think of the base as a formula, not a rulebook. Once you get the ratios down, you can swap things around based on what’s in your fridge.
- Chilled mashed potatoes – Cold potatoes hold their shape way better than warm ones, so don’t skip the chilling step. Any kind works here: your regular garlic mash, a boxed mix in a pinch, or even leftover mashed sweet potatoes if that’s what you’ve got.
- Shredded cheese – Cheddar is my go-to because it melts well and adds a nice sharpness, but crumbled feta, goat cheese, or parmesan all work great too. Just make sure it’s grated small enough to mix in evenly.
- Scallions – Both the green and white parts go in. If you’ve only got chives on hand, those are a fine substitute.
- An egg – This is your glue. Without it, the pancakes will crumble apart the second they hit the pan.
- Flour – Does double duty here: some gets mixed into the batter for structure, and the rest gets used to dredge the outside so you get that crispy crust.
- Oil for frying – Vegetable oil is the standard choice, but if you happen to have bacon grease sitting around from breakfast, use that instead. It’s a genuinely good upgrade.
A Few Ways to Make Them Your Own
Before we get to the method, a quick word on customizing — because once you’ve made the base version, you’ll probably want to start experimenting.
- Toss in some chopped bacon, leftover turkey, or diced ham for extra protein
- Stir in finely chopped cooked broccoli if you want to sneak in a vegetable
- Add a pinch of chili flakes or chopped chipotle for some heat
- Try a different cheese entirely for a totally different flavor profile
How to Make Leftover Mashed Potato Pancakes
This whole process is pretty forgiving, so don’t stress too much about precision here. It’s mashed potatoes — it’s supposed to be a little messy.
- Mix everything together. Grab a large bowl and combine your chilled mashed potatoes, shredded cheese, chopped scallions, the beaten egg, and about 3 tablespoons of flour. Stir until it’s evenly combined and holds together when you press it.
- Shape your patties. Using your hands, portion the mixture into about 12 even balls. Roll each one, then flatten it gently into a pancake shape roughly half an inch thick. Don’t overthink the shape — rustic is the whole point.
- Dredge in flour. Coat each pancake lightly in flour on both sides. This step is what gives you that crackly, golden crust, so don’t skip it even if you’re tempted to.
- Fry until golden. Heat a generous layer of oil in a large skillet over medium heat. Once it’s shimmering, add a few pancakes at a time — don’t crowd the pan. Let them cook undisturbed for about 3 to 4 minutes per side, until deeply golden and crisp. Resist the urge to flip early; that crust needs a minute to set.
- Drain and season. Move the finished pancakes to a paper-towel-lined plate and sprinkle with salt right away while they’re still hot.
What to Serve Them With
This is where you can really have fun. My personal favorite is a fried egg on top so the yolk runs into all the crispy edges, but here are some other combos worth trying:
- A dollop of sour cream or Greek yogurt
- A spoonful of homemade applesauce for a sweet-savory contrast
- Alongside scrambled eggs, bacon, or breakfast sausage for a full brunch spread
- Next to a simple green salad or sliced avocado for something lighter
- Paired with smoked salmon and capers for a fancier dinner-table version
Basically, treat these like you would hash browns — they go with almost anything.
Tips for Getting It Right Every Time
- Consistency matters. Every batch of leftover mashed potatoes is different depending on how much butter, milk, or cream was in the original recipe. If your mixture feels too wet and won’t hold its shape, add flour a tablespoon at a time until it firms up. If it feels too dry and crumbly, crack in an extra egg.
- Watch your fat choice. Butter tastes incredible but burns fast at medium-high heat. If you want that buttery flavor without the risk of scorching, use a mix of half butter and half oil.
- Don’t rush the flip. The biggest mistake people make is flipping too early. Give each side a full few minutes so the crust actually forms — otherwise you’ll end up with pancakes that fall apart in the pan.
- Batch it out. Frying in smaller batches keeps your oil temperature steady and gives every pancake room to crisp up properly instead of steaming.
Storing and Reheating
Leftovers of your leftovers — I love that for us. Here’s how to keep them:
- Refrigerator: Store in an airtight container for up to 3 days. Reheat in a skillet over medium heat until warmed through and crisp again — the microwave will leave them soggy, so avoid that if you can.
- Freezer: Let the pancakes cool completely, then arrange them on a parchment-lined tray, separating layers with more parchment if needed. Freeze for at least 6 hours until solid, then transfer to a freezer bag. They’ll keep well for up to a month, and you can reheat them straight from frozen in a hot skillet.
Leftover Mashed Potato Pancakes
Ingredients
Method
- In a large bowl, stir together the mashed potatoes, cheese, scallions, egg, and 3 tablespoons of the flour until fully combined.
- Using your hands, divide the mixture into 12 portions. Roll each into a ball, then flatten into a pancake about 1/2-inch thick.
- Place the remaining 1/2 cup of flour in a shallow dish and dredge each pancake on both sides.
- Heat 3 to 4 tablespoons of vegetable oil in a large skillet over medium heat until shimmering.
- Fry the pancakes in batches, 3 to 4 minutes per side, until golden brown and crisp. Add more oil between batches as needed. Avoid overcrowding the pan, and don’t flip too early.
- Transfer to a paper-towel-lined plate and sprinkle with salt immediately.
- Serve warm, topped with sour cream and a few extra scallions if you like.
Notes
- Mashed potato consistency varies batch to batch depending on how much butter, cream, or milk was in the original mash. If the mixture is too wet, add more flour a tablespoon at a time. If it’s too dry to hold together, add an extra egg.
- These freeze well — make a double batch and stash some away for a quick reheat later.
