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Leftover Mashed Potato Patties

Leftover Mashed Potato Patties

Leftover Mashed Potato Patties 

This simple recipe shows you how to make some very tasty leftover mashed potato patties, using any vegetable leftovers you may have from your Sunday lunch.

These patties can also be made from any leftovers from Christmas dinner or Thanksgiving dinner as well, of course.

leftover vegetables and mashed potato

Mashed Potato or Roasties?

You may not always have mashed potato leftovers from your Sunday lunch. I actually seldom cook mashed potato with a roast, as I prefer to make my crispy roast potatoes.

However, the patties in these pictures were made after I had accidentally overcooked some potatoes that I was par-boiling to make some roasties for our roast chicken dinner.

leftovers and mashed potato ingredients
All the ingredients used in this recipe

I am not sure exactly what had happened as the potatoes had only been boiling for about 10 minutes, but they had disintegrated very quickly  – probably because of the type of potatoes that I had never used before.

I managed to save the majority before they fell to pieces and rescued them in time to turn them into some crispy roasties.

But some of them had effectively turned into mash without me even having to mash them. I saved them for later and then used them to make this dish.

Leftover Mashed Potato Patties
Pre-formed patties

If I had had roast potatoes leftover, (very unlikely in our house I should add 😊 ), I could have used them instead of course.

Roast potatoes will mash as well. Basically, you can make this easy recipe anytime you have some cooked potatoes leftover – boiled, mashed, roasted it does not really matter.

Just store them in the fridge and use them to make these potato cakes the next day.

leftover cakes

Which vegetables can I recook in these potato cakes?

Well in these cakes I have used carrot, sugar snaps, potatoes, onion, cheese, egg and some bacon. But if you had broccoli, cauliflower, beans, parsnip, cabbage or any other vegetable leftover, you could incorporate them as well.

leftover mashed potato cakes

The advantage of this recipe for leftover mashed potato patties is that if the vegetable is soft it will mash and mix with the potato.

And if not then it will just stand out and add colour to the dish. If the vegetable is quite hard you may need to chop it smaller before mixing it with the other ingredients.

leftover mashed potato patties

Using up leftovers

Using leftovers can be a great way to save time, money, and reduce food waste. Instead of throwing away excess food, leftover ingredients can be used to create new and delicious meals.

This is especially useful for busy individuals who may not have time to cook every day, as leftover ingredients can be quickly and easily turned into a new dish with minimal effort.

Additionally, using leftovers can be a cost-effective way to stretch your food budget, as you can use what you already have on hand instead of buying new ingredients.

This recipe is a good way of preventing any food wastage caused by over-estimating, and is also a good way to get healthy vegetables into the kids, as they will love these.

As an alternative you could try making fish cakes or bubble and squeak cakes with the leftovers, depending on what you have.

Here I have served them up with some cold chicken from the roast chicken dinner the day before:

leftover cakes

I hope you enjoy making these leftover potato cakes. Please let me know how you get on in the comments section below! 

How to make mashed potato leftover cakes

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leftover cakes

Leftover Mashed Potato Patties

Yield: 1
Prep Time: 5 minutes
Cook Time: 10 minutes
Total Time: 15 minutes

This simple process will help you turn your Christmas or Thanksgiving leftovers into some delicious, mixed potato cakes. So easy and tasty - a great snack at any time of the day.


  • Vegetable leftovers from your Sunday Lunch (here I had mashed potato, sugar snaps and carrots)
  • Streaky Bacon
  • Grated cheddar cheese
  • 1 egg
  • Breadcrumbs (I have used Panko breadcrumbs here)
  • 1/2 onion, finely chopped
  • Freshly ground Salt and pepper, to taste
  • Vegetable oil (for frying)


  1. The quantities of the ingredients in this recipe are determined by the amount of leftovers you have, so they are not clearly specified in this recipe. As a general indication see the pictures in the blog post above, and use similar proportions.
  2. I use approximately the same volume of breadcrumbs to the volume of mashed potato. If you have a lot more you may wish to use more onion or eggs.
  3. To start, cut the bacon into small pieces and fry in a pan on both sides for about 5 minutes until the fat has been rendered.
  4. Then basically, mash and mix everything together as finely as possible until you have a well-mixed ball of ingredients. Then divide and fashion some round puck-shaped patties about 15-20mm thick.
  5. I actually use a stainless steel biscuit cutter to do this, as you can then compress the food together tightly to stop it falling apart.
  6. Heat some oil in a skillet and then cook the patties on both sides for about 5 minutes each side over medium heat, being careful not to burn them, until they are a golden brown colour.


You can use all sorts of leftovers to make these leftover patties. Parsnips, sprouts, broccoli, whatever. It is important though to have some potato as a base to hold it all together.

Leave out the breadcrumbs for a gluten-free treat.

Eat them hot with some mayo or ketchup, or as a side to some cold meat like chicken, for example.

If you do not want to fry them in the pan, you can also cook them in the airfyer for about 15 minutes at 195C.

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Did you make this recipe?

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Some other potato cake recipes made with mashed potatoes:
Bubble and Squeak Cakes with Sprouts
Potato Patties
Mashed Potato Recipe - Make the creamiest Mash
Tuna Fish Cake Recipe
Honey Roasted Parsnips
Best Crispy Oven Roasted Potatoes
Roast Chicken Dinner
Swiss Rösti
Cheese and Onion Rösti

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