In a large 4 qt slow cooker sprayed with cooking spray, mix the macaroni, evaporated milk, milk, butter, salt, pepper, eggs and all but 1/2 cup of the grated cheese.
Sprinkle the reserved cheese over the top of the mixture and then sprinkle with paprika.
Cover and cook on low heat for 3 hours and 15 minutes.
Turn off the slow cooker, stir the mixture and serve hot.