Mashed potatoes

Use frozen mash! For me frozen mash has changed my life!

I keep mashed potato warm in my slow cooker (on low).

Keep mash warm in the oven and there's never any leftovers here!

I don't usuallly mash until the last possible minute. Drained boiled spuds stay hotter longer in the pan they were cooked in (heavy base, tight fitting lid) than if you mash them straight away. If that's not possible I put it in a dish, fork over the top for crispy bits with a bit of butter and bung it in the oven.

I love it fried too. Mix it with: mustard / onions/ spring onions / cabbage / sprouts / garlic / horseradish

Yum x

My mother used to use an ice cream scoop and put the blobs of mashed potato on a tray - tiny knob of butter on each one and under the grill. Came out like duchesse potatoes - my father preferred them to roasted ones.
She put butter in the potatoes when mashing them and would sometimes then pop a tray load in the freezer - the butter enabled the mash to freeze OK.

Fry it. in a nice bit of butter Using healthy vegetable oil spray.

This is from wikihow,

Use a pan on your stovetop. First, pour some cream. Bring it to a simmer. Stir your mashed potatoes into the cream evenly. Continue to stir until the potatoes are heated through. If needed, add more cream and wait for it to come to a simmer, then stir it into the potatoes.[1]
Depending on the amount of potatoes you’re reheating and the size of the pan, it’s best to start off with too little cream than too much. At the very least, use enough to coat the bottom of the pan.
Use a food thermometer to check the potatoes’ internal temperature; for health reasons, the potatoes should reach at least 165º before they’re safe to eat.[2]

I've reheated mash in a frying pan, with a little butter in the pan add the potato and keep moving it around until it's hot. You don't want to actually fry it.

Pop it in a covered bowl in the microwave. How long for depends on the amount of mashed potato needing heating.

On the other hand you could turn it into colcannon or bubble and squeak, which is cooked in a frying pan.