Crab rolls were an Earth dish made from crab meat.
In 2375, Keiko O'Brien made several crab rolls for Julian Bashir. (DS9: "Tacking Into the Wind")
The Star Trek Encyclopedia (4th ed., vol. 1, p. 166) described this food as a, "Traditional Earth appetizer food of seasoned crustacean meat, avian ova, bread crumbs, and tomato juice formed into small balls and broiled."