In a large mixing bowl, combine the thawed hash browns, French onion dip, sour cream, cream of chicken soup, shredded cheddar cheese, and chopped green onions.
Add in the garlic powder, salt, and pepper, mixing everything until well incorporated.
Transfer the mixture into a greased 9x13 inch baking dish, spreading it evenly.
Drizzle olive oil over the top for added flavor and moisture.
Bake in the preheated oven for 30 minutes.
After 30 minutes, remove the dish from the oven and sprinkle the French fried onions evenly over the top.
Return to the oven and bake for an additional 10-15 minutes, or until the top is golden brown and crispy.
Let it cool slightly before serving.
Notes
Let it cool slightly before serving for better texture.