01 - Preheat oven to 400°F. Generously coat a 24-cup mini muffin tin with nonstick cooking spray to prevent sticking.
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, pepper, and the egg. Stir thoroughly until all ingredients are evenly distributed and well incorporated.
03 - Spoon the mixture evenly into each cup of the prepared mini muffin tin, pressing down gently with the back of the spoon to firmly pack each cup.
04 - Bake for 20 to 25 minutes, or until the tops and edges are golden brown and crispy.
05 - Allow the bites to cool in the tin for 3 to 5 minutes before carefully removing. Serve warm with additional sour cream or extra chopped green onions on top if desired.