Fast and easy to prepare, this tasty Cheddar cheese-tuna melt with guaranteed kid appeal gets lively by adding a little Dijon mustard. Posted on May 11, 2021 by Caitlin Acosta Fast and easy to prepare, this tasty Cheddar cheese-tuna melt with guaranteed kid appeal gets lively by adding a little Dijon mustard. AdvertisementShare this:TwitterFacebookLike this:Like Loading... Related