Heat 2 tbsp butter in a skillet over medium heat. Add thawed hash browns, salt, and pepper. Press down and cook until golden and crispy on one side.
Flip the hash browns, add remaining butter, and crisp the other side. Once golden, transfer to a plate and set aside.
In the same pan, cook ground pork sausage until browned. Break it up while cooking.
Add diced ham, onion, and bell pepper. Sauté until veggies are tender.
Return hash browns to the pan. Stir everything together gently.
Sprinkle shredded cheddar cheese evenly over the mixture.
Cover the skillet with a lid and let the cheese melt for 2–3 minutes.
Serve hot, optionally with a fried egg or avocado on top.