Making Mashed Potato Cheese Puffs is straightforward if you follow these simple steps:

1. Prepare the Mashed Potatoes: If you haven’t already, make your mashed potatoes and let them cool completely.
2. Mix Ingredients: In a large mixing bowl, combine the cooled mashed potatoes, shredded cheese, flour, both types of cheese, eggs, garlic powder, onion powder, salt, black pepper, and cayenne pepper (if using).
3. Form Puffs: Scoop out spoonfuls of the mixture and shape them into small balls or puffs with your hands.
4. Heat Oil: In a large skillet or pot, heat oil over medium heat. If baking, preheat your oven to 400°F (200°C) and prepare a baking sheet with parchment paper.
5. Fry/ Bake the Puffs: Carefully place the puffs into the hot oil in batches, cooking until golden brown on all sides. If baking, place the puffs on the prepared baking sheet and lightly spray with cooking oil. Bake for 20-25 minutes, flipping halfway through.
6. Drain Excess Oil: Once golden brown, remove the cheese puffs from the oil and place them on paper towels to drain excess oil.
7. Cool: Let them cool for a few minutes before serving.

Following these steps will lead you to delicious Mashed Potato Cheese Puffs that are crispy on the outside and decadently cheesy on the inside.