The DR Congo striker delivered a superb 30-minute performance at the Astana Arena to seal the Yellow Submarine’s passage to the next stage of the European club second-tier competition.
Compatriot, Kabananga got the curtain raiser for the hosts with a stunning left-footed shot - from outside the box - that sailed over Mariano Barbosa in the 22nd minute.
Shortly before the interval, Daniel Raba levelled matters for the Spanish visitors to end the first half 1-1.
Bakambu, recently named La Liga Best Player of the Month for October, was thrown into the mix for Pablo Fornals on the hour mark and the former Bursaspor attacker repaid Javi Calleja’s faith with a brace to seal the victory.
Five minutes after his introduction, the 26-year-old gave the visitors the lead for the first time in the tie. And in the 83rd minute, he secured victory for the Spanish top-flight outfit after striking past Nenad Eric.
With few minutes before the final whistle, Ghana’s Twumasi arrowed a shot - his fourth in five Europa League games - past Barbosa to set up a tense finish but Calleja’s men stood firm, thus, confirming their spot in the knockout phase of the Europa League, with 11 points from five games in Group A.
Kabananga and Twumasi were on parade for the entire duration of the tie and the former was cautioned in the dying moment of the tie.
The goals were Bakambu’s second and third in five appearances in the competition with his first coming in the reverse fixture of the tie at Estadio de la Cerámica on September 14.
The 26-year-old now has found the back of the net 11 times in 16 games across all competitions this season.