Spray 4-quart slow cooker with nonstick cooking spray.
Layer in slow cooker 1/2 of the potatoes, 1/2 of the sausage, 1/2 of the peppers, 1/2 cup cheese and 1/2 of the onion. Repeat layers; set aside.
Microwave milk, Country Crock® Calcium plus Vitamin D and Bouillon Cube in microwave-safe bowl at HIGH 1 minute or until milk is hot. Stir milk mixture into eggs; pour into slow cooker.
Cook covered on HIGH 3 to 4 hours. Turn off heat and sprinkle in remaining 1/2 cup cheese and let stand covered 10 minutes or until cheese is melted. Serve, if desired, with hot pepper sauce.