Begin by filling a large pot with water, adding a generous pinch of salt, and bringing it to a rapid boil over high heat. Peel and chop your floury potatoes into even-sized chunks, then carefully add them to the boiling water. Cook for about 15 minutes or until the potatoes are fork-tender.

Once the potatoes are cooked, carefully drain them in a colander to remove excess water. Return the drained potatoes back to the pot over low heat, allowing any leftover moisture to evaporate for a minute.

Add your grated mature cheddar cheese and salted butter to the warm potatoes. Sprinkle in a bit of salt (if using) and freshly ground black pepper to taste, stirring gently to combine everything together.

Using a potato masher, begin mashing the potato and cheese mixture until you reach your desired consistency. For creamier mashed potatoes, consider adding a splash of milk or cream gradually while mashing.

Once your Easy Cheesy Mashed Potatoes are beautifully creamy, transfer them to a serving bowl. Serve warm alongside your favorite dishes.