Preheat your oven to 400°F (200°C) to ensure it’s hot enough to achieve that perfect crispy texture.

Mix together the leftover mashed potatoes, cheddar cheese, eggs, flour, salt, black pepper, and garlic powder in a large bowl until well combined.

Shape the mixture into small balls, about the size of a golf ball, then roll each one in the breadcrumbs.

Arrange the puffs on a baking sheet lined with parchment paper to prevent sticking and ensure even baking.

Bake in the preheated oven for 25 minutes or until golden brown and tempting.