Cheesy Potluck Potatoes - Dinner Bell Creamery

Ingredients

• 1 package (32 ounces) frozen cubed hash browns, thawed
• 10 tablespoons butter, divided
• 1 small yellow onion, finely diced
• 1 teaspoon minced garlic
• 1/4 cup all-purpose flour
• 1 cup milk
• 2 cups chicken stock
• Salt and pepper to taste
• 2 cups sharp cheddar cheese, freshly shredded
• 1 cup sour cream
• 2 cups corn flakes, crushed