Pro Tip: Evaporated milk is the secret ingredient to making the perfect slow cooker mac and cheese. Not to be confused with sweetened condensed milk, evaporated milk is simply milk with about 60% ...

Put the macaroni and both types of cheese in a slow cooker. Pour over the evaporated milk and add 700ml/1¼ pint of water. Season with pepper and stir. Cover and cook on high for 1½ hours ...