Cheesy Hashbrown Casserole for 10 Servings with Golden Crust

Ingredients

• 30 oz frozen shredded hashbrowns, thawed and patted dry
• 0.5 cup unsalted butter, melted
• 10.5 oz condensed cream of chicken soup
• 16 oz full-fat sour cream
• 0.5 cup yellow onion, finely minced
• 1.5 cups Colby cheese, freshly grated, for the mixture
• 0.5 cup Colby cheese, freshly grated, for topping
• 1 tsp sea salt
• 0.5 tsp freshly cracked black pepper
• 0.25 tsp garlic powder