boss Ronald Koeman was unhappy with his side for not effectively sealing the tie after they beat Hajduk Split 2-0 in the first leg of their Europa League qualifying play-off at Goodison Park.
A match that had to be halted for a few minutes in the first half when trouble flared in the away section saw the hosts go in at the interval two goals up thanks to a Michael Keane header and an Idrissa Gueye strike.
Everton were not so dominant in the second half and goalkeeper Jordan Pickford was called upon to make several decent saves to ensure Hajduk did not nick a goal ahead of next Thursday's second leg in Croatia.