The match, played at KISA's home-ground at the UKI arena in Jessheim was as one-sided as it will get for the home side as they bounced back from defeat last time out.
They however had to come from behind, after Baerum scored early to take the lead through Rozhat Shaswari after just two minutes.
From then on though, they scored five times without reply, with Steevan Dos Santos 6 and 79, Kenneth Jensen 46, Simen Mikalsen 56, Tom Kristoffersen 59 handing them a 5-1 lead before Lars Sandbu added a second for the visitors.
The win means KISA are seventh with 38 points from 26 games played, 22 points behind leaders Start.
Kenyan international keeper Arnold Origi did not feature for KISA as he is with the Kenyan national team preparing for a friendly match against South Africa.