01 - Preheat oven to 400°F. Generously coat a 24-cup mini muffin tin with nonstick cooking spray.
02 - In a large mixing bowl, combine the thawed hashbrowns, shredded cheddar cheese, sour cream, melted butter, crumbled bacon (if using), chopped green onions, garlic powder, onion powder, salt, black pepper, and egg. Stir until all ingredients are evenly incorporated.
03 - Spoon the mixture evenly into each cup of the prepared mini muffin tin, pressing gently to firmly pack each one.
04 - Bake for 20 to 25 minutes, or until the edges are golden brown and crispy.
05 - Let the bites cool in the tin for 3 to 5 minutes before carefully removing. Serve warm with additional sour cream or chopped green onions on top if desired.