Jackson Muleka scored the first goal in the 26th minute and Mortadha Ben Ouanes made it 2-0 before the end of the first half at Vodafone Arena.
Muleka scored again in the 82nd minute and the game ended 3-0.
After their first defeat under their new head coach Valerien Ismael, Besiktas placed seventh with 51 points while Kasimpasa lay at the 11th spot in the league standings.
Super Lig Monday results:
Besiktas-Kasimpasa: 0-3
Sivasspor-Alanyaspor: 1-0
Source: Anadolu Agency
