To reheat mashed potatoes in a slow cooker, set it to Low for 1-3 hours, adding a splash of milk/cream and butter and stirring occasionally to keep them moist and creamy until hot, often for large batches or for holding warm, though some recommend preheating on the stovetop for safety if they're fridge-cold before transferring to the slow cooker.
Slow cooker method
Just as you can make mashed potatoes in a slow cooker, you can reheat them that way, too. Simply add them into your machine, cover, and set to low. Warm through for two to three hours, stirring occasionally and adding milk, cream, or butter to add moisture if necessary.
Cool these quickly and never put them in a slow cooker liner, put that liner in the fridge, then put the cold liner with the cold potatoes into the slow cooker to reheat.
The easiest way to reheat mashed potatoes is in the microwave. Reheat them on high, stirring every 30 seconds, until heated through. If needed, stir in extra milk or butter, 1 tablespoon at a time. You can also reheat mashed potatoes in a 350° oven. Let the mashed potatoes sit on the counter while the oven preheats.
If the food is already thoroughly cooked and all you are doing is heating it up you should be good with an hour on high. I have the tiny lunch crockpot that I use at my desk for leftovers at work. I usually give it an hour to heat my food, anything over that dries it out.
Don't do this, experts say. This is a bad idea for two reasons. Firstly, it will take hours for the leftovers to reheat, which can create a breeding ground for harmful bacteria. 1 Secondly, placing a chilled slow cooker insert on a hot base may cause the insert to crack.
Both low and high stabilizes at 209°F. The difference is the time it takes to reach that temperature. Low: 7-8 hours to reach the simmer point. High: 3-4 hours to reach the simmer point.
Restaurants prepare the potatoes ahead by boiling and mashing just the potato, then just before serving, it is mixed into boiling cream (or milk or even broth or a combination thereof) to reheat it and make it nice and creamy.
If making in advance, hold off on adding any milk or cream until you reheat. If you're making the potatoes only a couple of hours ahead, you can keep them warm. If you're making them a day or two in advance, put them in the fridge.
"Hold your mashed potatoes in a bain-marie, or water bath, with a lid on top [and] they stay for hours—days really," Ray said in an interview with Allrecipes while promoting her partnership with Home Chef. The method is oh-so-simple.
Reheating Baked Potatoes
Reheating leftovers in a slow cooker is not recommended. Cooked food should be reheated on the stove, in a microwave, or in a conventional oven until it reaches 165 °F. Then the hot food can be placed in a preheated slow cooker to keep it hot for serving—at least 140 °F as measured with a food thermometer.
Most food safety experts recommend limiting the time food spends on the warm setting to no more than two hours, though some manufacturers suggest a maximum of four hours. To ensure your food remains safe, use a thermometer to check that it's above 140°F before serving.
It depends how well-done you prefer your spuds, but in general, they'll be ready to eat after 4 to 6 hours in a slow cooker. If you use the low setting, which is helpful if you won't be ready to eat anytime soon, they typically take between 6 to 8 hours.
Add potatoes to cream while cutting to prevent browning. Be sure to submerge potatoes in cream. Add enough water to cover potatoes, about a cup. Cover; cook on High heat setting 6 hours to 6 hours 30 minutes or until potatoes are very tender and can be mashed easily by pressing against side of cooker with spatula.
5 Ways to reheat and keep mashed potatoes warm
Reheat in the oven: cover mashed potatoes with foil and reheat at 375 for 30-40 minutes. Reheat in a slow cooker on medium low, add them to your slow cooker and mix in a little more cream and butter to keep them moist. Stir every 15 minutes until hot.
Mashed potatoes are good for up to four days when stored in an airtight container in the refrigerator. However, if you plan to serve these do-ahead mashed potatoes as a side dish, we recommend serving them within two days.
Cool completely, store in vac pack bags. Reheat in waterbath, transfer to pan, warm cream butter up, beat into mash with Maurice. Pulse in robocoupe very slightly. If you do this too much it will just split and ruin it.
Mashed potatoes are delicious on their own, but there's also something wonderful about loading them up with bacon, cheese, and crispy fried onions. Oh, and potato chips on top! Get Ree's Mashed Potato Casserole recipe.
Slow Cooked Success | Cooking Tips
How long should I cook a slow cooker recipe? If a dish usually takes: 15-30 mins, cook it for 1-2 hours on High or 4-6 hours on Low. 30 mins – 1 hour, cook it for 2-3 hours on High or 5-7 hours on Low.
If you are cooking from raw or frozen/defrosted raw low heat is the best. If you are cooking from already prepared meats like frozen meatballs or something like that, high works great.