01 - Preheat oven to 400°F. Generously coat a 24-cup mini muffin tin with nonstick cooking spray.
02 - In a large mixing bowl, thoroughly combine the thawed hashbrowns, sharp cheddar cheese, sour cream, melted butter, crumbled bacon, green onions, garlic powder, onion powder, salt, black pepper, and egg until evenly incorporated.
03 - Spoon the potato mixture evenly into the prepared muffin cups, pressing down gently but firmly to compact the filling.
04 - Bake for 20 to 25 minutes, or until the edges are deeply golden brown and crispy.
05 - Allow the bites to cool in the tin for 3 to 5 minutes before gently loosening with a spoon. Serve warm with optional sour cream and chopped green onions.