Overnight Slow Cooker Breakfast Casserole

to 3 russet potatoes, peeled and shredded ((you can also use a 20-ounce bag of refrigerated/frozen hash browns - you do not need to thaw them out))

shredded part-skim mozzarella cheese, (divided)

shredded parmigiano reggiano

fully cooked mild breakfast links turkey sausage (such as Johnsonville), sliced into coins

sun-dried tomatoes in oil, chopped

large eggs

half & half

2% milk

dried basil

garlic powder

chili powder

salt

fresh ground black pepper

chopped green onions, for garnish ((optional))

halved cherry tomatoes, for garnish ((optional))