Spray a 6 quart slow cooker with cooking spray. Layer 1/2 of the potatoes on the bottom of the slow cooker.

Top with hal of the sausage, mozzarella and Parmesan cheese, sun dried tomatoes and green onions. Repeat layering

Beat eggs, milk and pepper in a large bowl with a whisk until blended.

Pour over potato-sauge mixture

Cook on high for 3 - 4 hours or low for 6 - 8 hours.