To prepare potatoes:
You can use leftover mashed potatoes (about 1-1/2 cups / 375 ml) or prepare 3 medium potatoes for the recipe.
In microwave: pierce unpeeled potatoes with a fork and place in microwave. Cook on high for 3-5 minutes or until the potatoes can be pierced easily with a knife. Let cool, then peel and proceed with recipe.
On stovetop: peel potatoes and cut into large chunks. Place in a pot of water and bring to a simmer over medium heat. Let the potatoes simmer for 5-7 minutes or until they can be pierced easily with a fork. Drain potatoes and proceed with recipe.