I start by preheating my oven to 400°F (200°C) and greasing a 12-cup muffin tin with butter or nonstick spray. This step prevents sticking and ensures easy removal of the puffs.
Next, I combine the cold mashed potatoes with the shredded cheese, eggs, flour, garlic powder, salt, and pepper. If the mixture feels too wet, I sprinkle in breadcrumbs until it’s thick but still scoopable.
Using a spoon or cookie scoop, I portion the mixture evenly into the muffin cups. I like to sprinkle a little extra cheese on top for a golden, crispy crust that makes each bite irresistible.
Finally, I bake them for 20–25 minutes until the tops are golden brown and the edges crisp. After removing from the oven, I let them sit for about 5 minutes in the pan before transferring them to a plate.