It was a match with an odd historical twist: the last meeting, a 1998 Catalan Cup final that Europa won on penalties, was overseen from the Barcelona bench by a young Jose Mourinho.
Hansi Flick handed starts to a raft of academy players and fringe squad members in a lineup far removed from what he is expected to field for the league opener, and Barcelona took control quickly.
Ibrahim Diarra opened the scoring inside the first quarter of an hour before Hector Fort doubled the lead shortly after, though Europa, who play in Spain's third tier, pulled one back before half-time through Flavio Andre.
Ebrima Tunkara, regarded as one of La Masia's brightest emerging prospects and among the standout performers on the night for his mobility and willingness to run in behind, restored Barcelona's two-goal cushion moments after the restart, before further changes brought Marc-Andre ter Stegen on for a first appearance in Barcelona colours in several months, replacing Wojciech Szczesny. Alex Gonzalez completed the scoring late on to make it 4-1.
The result marks the beginning of Barcelona's pre-season schedule as they build towards their La Liga opener against Elche on August 23. Flick's squad travel to England this weekend, where they will face Birmingham City on July 31, continuing preparations for what the head coach hopes will be a title challenge in his second full season in charge, with several fringe first-team players, including Ter Stegen and Roony Bardghji, given minutes as Flick continues to weigh up their long-term futures at the club.
Barcelona XI: Szczesny; Hector Fort, Christensen, Gerard Martin, Jofre Torrents; Guille Fernandez, Brian Farinas, Diarra; Bardghji, Hamza, Kluivert.
Substitutes used: Ter Stegen, Casado, Alex Gonzalez, Xavi Espart, Toni Fernandez, Marques.
Goals: Diarra, Hector Fort, Tunkara, Alex Gonzalez (Barcelona); Flavio Andre (Europa).