Spray 4- to 5-quart slow cooker with cooking spray. Cut potatoes into eighths; place in cooker. Sprinkle with salt and pepper. Place bratwurst on potatoes. Top with sauerkraut. Sprinkle with caraway seed.
Cover; cook on Low heat setting 6 to 7 hours.
Remove bratwurst, potatoes and sauerkraut from cooker with slotted spoon.