Preheat oven to 400°F (200°C) if baking, or heat oil in a deep skillet for frying.

In a skillet over medium heat, cook the shredded cabbage with a small splash of water or a bit of oil until softened (about 5 minutes). Let cool slightly.

In a large bowl, mix the mashed potatoes, cooked cabbage, green onions, garlic powder, cheddar cheese, salt, and pepper until well combined.

Roll mixture into balls, about 1.5 inches in diameter.

Set up a breading station: one bowl with flour, one with beaten eggs, and one with breadcrumbs.

Dip each ball in flour, then egg, then breadcrumbs, pressing gently to help coating stick.

For baking: Place on a parchment-lined baking sheet, spray lightly with cooking spray, and bake for 20-25 minutes or until golden and crispy.

For frying: Heat oil over medium heat and fry in batches until golden brown, about 2-3 minutes per side. Drain on paper towels.

Serve hot with your favorite dipping sauce or enjoy on their own!