Koogle was the brand name for flavoured peanut butter that was produced by Kraft Food, starting in 1971. It was available in four delicious flavours: Chocolate, Vanilla, Banana, and Cinnamon. I can't think why it doesn't still exist!
The advert for Koogle was pretty special, too. It featured a crazy character, rather like the Koolade ad did. It went something like, "Here comes Koogle with those Koog-Koog-Koogley eyes."