Let's cook.
Preheat oven to 375°F (190°C). Lightly grease a 9x13 inch baking dish.
In a large skillet, cook the breakfast sausage over medium heat, breaking it apart with a spoon, until browned and cooked through, about 8-10 minutes. Drain any excess grease.
Spread the thawed hash browns evenly in the bottom of the prepared baking dish. Top with the cooked sausage and 1.5 cups of shredded cheddar cheese.
In a medium bowl, whisk together the eggs, milk, salt, and pepper until well combined.
Pour the egg mixture evenly over the hash browns, sausage, and cheese in the baking dish.
Bake for 35 minutes at 375°F (190°C).
Remove from oven, sprinkle the remaining 1/2 cup of shredded cheddar cheese over the top, and return to the oven for another 10 minutes, or until the cheese is melted and bubbly and the eggs are set.
Let stand for 5 minutes before serving.
Save this recipe so you can find it again.