DS hated baby applesauce -- probably a texture issue, but he'd gag like he had a hair ball. So we used babyfood bananas for the most part, but sometimes pears, peaches, pineapple. And nowdays gerber baby food comes in a little container with a lid, after a few days if we hadn't finished it, we'd toss it. But the stage 1 containers are pretty small and if you're feeding her every 3-4 hours, you'll use up quite a bit.
I'm just kinda shocked/surprised that the dietician or nurse or doctor for that matter didn't suggest baby food fruit. When DS was diagnosed, the nurses in the NICU called down to the CF floor to get suggestions on best way to give him enzymes, PLUS the dietician printed off a whole bunch of literature from the CFF about giving enzymes to babies and toddlers. Are you going to an accreditted CF Center?