How long to boil potatoes: Mashed potatoes can take roughly 20 minutes to make (Image: GETTY) People can test whether their potatoes have finished boiling by piercing them with a knife. How Long to Boil Potatoes for Mashing How long you should boil potatoes you plan to mash depends on how large the potatoes (or potato pieces) you’re using are. Some people prefer to boil their potatoes whole, while others prefer to cut the vegetables into pieces before boiling. Mashed potatoes are one of America's favorite side. They're easy to make, though the mashing is a bit of work. For success, you need to choose suitable potatoes, know how long to boil them and know how to make them creamy – including avoiding one common mistake between boiling and mashing. How long to boil potatoes in a microwave (fastest method) It takes 6-8 minutes to boil large whole potatoes in a microwave. Just place 2 potatoes in a microwave-safe dish and add 2 tablespoons of water. Cover and microwave on high. Let them rest for 2 minutes before serving. Ever Wondered How Long it Takes to Boil Potatoes? Find Out Now. Have you ever wondered how long to boil potatoes while using them in recipes? Take a look at some information about the duration of boiling potatoes before consuming them. How long to boil potatoes. If you wonder how long to boil potatoes, the answer highly depends on the variety of potatoes and the heat level you’re using. It also depends if you’re cooking whole potatoes or cubed. In most cases, smaller potatoes and those cut in smaller pieces are ready after 15 or 20 minutes. Besides “because your recipe said so!” you might boil potatoes if you don’t want them to dry out (as they do in the oven).Generally, you boil potatoes when you plan to mash them or toss them into a salad, though boiled potatoes can also make a quick side dish. Cooking potatoes in boiling water is a first step for making mashed potatoes, potato salad, or many simple side dishes. We'll show you how to prep your potatoes for cooking and how long to boil potatoes for perfect spuds every time. How Long to Boil Potatoes. If the potatoes are whole, it’s not easy to give an exact amount of time. It depends on the size and type of the potato. However, here are some guidelines. How to Boil Potatoes. There are a variety of recipes that call for you to boil potatoes before you add them to your dish, including mashed potatoes and potato salad. The best way to boil potatoes is to cook them on the stove after you've.