Ideal Slow Cooker Size: 2 to 3-QuartIf it isn't already cooked, brown the sausage in a skillet.Drain and set it aside.Grease your slow cooker.Place one third of the frozen potatoes in the bottom of the slow cooker. Top with one third of the cooked sausage and one third of the cheese.Repeat the layers two more times.In a large bowl, beat together the eggs, milk, salt and pepper.Pour the egg mixture over the potatoes, sausage and cheese in the slow cooker.Cover and cook on LOW for 4 or 5 hours or until the casserole is set in the middle and lightly brown around the edges.Cut into 6 wedges to serve.