[header] How to make mashed potato pizza [title] Preheat the oven to 350 ° fahrenheit (176 ° celsius). [title] Put water and a pinch of salt into a large pot. [title] Put the pan onto the stove and bring to the boil. 
[title] Put the potato chunks into the boiling water and cook for about 10-15 minutes until the potatoes are tender but not fully soft. [title] Drain the potatoes in a colander and place them in a large bowl.