Cook the sausage in a skillet over medium heat until browned and cooked through. Drain any excess grease.
In a bowl, combine the cooked sausage with softened cream cheese until well blended.
In a separate bowl, whisk together the eggs, milk, garlic powder, salt, and pepper.
In a large skillet, heat butter or oil over medium heat. Spread the hashbrowns evenly in the pan and cook until golden and crispy on both sides.
Pour the egg mixture evenly over the cooked hashbrowns.
Spoon the sausage and cream cheese mixture over the eggs.
Top with shredded cheddar cheese.
Cover and cook on low heat until eggs are fully set and the cheese is melted, about 8–10 minutes.
Garnish with chopped chives or green onions before serving.