Cole Palmer provided two assists in the second half as Chelsea overcame a 1-0 deficit to defeat Real Betis 4-1 in the Conference League final.
Former Chelsea winger Joe Cole hailed Palmer as an "absolute genius" for his influential performance in the match after providing two sublime assists.
Enzo Fernandez and Nicolas Jackson scored within six minutes before Jadon Sancho and Moises Caicedo added a fourth in injury time.
Chelsea's victory makes them the first club to win all three major UEFA trophies after previously winning the Champions League and Europa League.
Chelsea captain Reece James highlighted the team's ambition to compete in the Champions League next season after securing the Conference League title.