To contain, include, incorporate. To abstain really doesn't make sense in this context. That abstain meaning I think uses the "return to natural state" meaning of ent- (number 1). Think "unhold" in the sense of "cease to hold a position", that's "to abstain", the contain one... I'm not 100% but I think it's number 6: A thing is furnished such that the adjective becomes true. The cookie is enholden with chocolate chips.

karamellsirus is a misspelling, Karamellsirup should be obvious. crunshies, too, is a misspelt crunchies. Only one that shouldn't be recognisable is Regenbogenstreusel, rainbow sprinkles. Like on doughnuts.