Susan Ritts, the creator of Putting on the Ritts catering and Crazy Good Dressing, shares her recipe for a light appetizer. Cut tuna steaks into bite size pieces. Put tuna in a large bowl.

There are two ways you could approach this appetizer. One is to go with open-faced tuna melts. Start by cutting your toast bread into smaller pieces to use as a base — look to our smoked Gouda ...