Preheat your oven to 350°F (175°C).

In a large mixing bowl, combine the frozen hashbrowns, shredded cheddar cheese, diced onion, and bell pepper.

In a separate bowl, whisk together the large eggs, milk, salt, and black pepper.

Pour the egg mixture into the bowl with the hashbrowns and veggies. Stir gently.

Lightly grease a baking dish and evenly pour the combined mixture into it.

Place the dish in your preheated oven and bake for about 45 minutes.

Once baked, allow the casserole to cool for a few minutes before slicing and serving.