Cheesy Hashbrown Casserole for 10 Servings with Golden Crust

Ingredients

• 30 oz frozen shredded hashbrowns, thawed and patted dry
• 1/2 cup unsalted butter, melted
• 10 1/2 oz condensed cream of chicken soup
• 16 oz full-fat sour cream
• 1/2 cup yellow onion, finely minced
• 1 1/2 cups Colby cheese, freshly grated, for the mixture
• 1/2 cup Colby cheese, freshly grated, for topping
• 1 tsp sea salt
• 1/2 tsp freshly cracked black pepper
• 1/4 tsp garlic powder