01 - Preheat oven to 400°F. Generously spray a 24-cup mini muffin tin with nonstick cooking spray, ensuring every surface is coated.
02 - In a large mixing bowl, combine the thawed hashbrowns, shredded sharp cheddar, sour cream, melted butter, crumbled bacon if using, green onions, garlic powder, onion powder, salt, black pepper, and the egg. Stir until all ingredients are evenly distributed and the mixture holds together.
03 - Spoon the mixture evenly into the prepared mini muffin cups, pressing each one down gently but firmly so the bites hold their shape during baking.
04 - Bake for 20 to 25 minutes, or until the tops and edges are golden brown and crispy.
05 - Let the bites rest in the tin for 3 to 5 minutes to set, then carefully remove. Serve warm with additional sour cream or extra chopped green onions on top.