Buttercup has graduated to straight-up raisins.
When I first started giving raisins to Buttercup, I would soak them for a few minutes to soften them a bit. Maybe I'm an over-imaginative first time mother, but I kept visualizing a hard raisin torpedoing into Buttercup's windpipe.
Anyway, Buttercup now eats the raisins fresh from the box, sometimes with her breakfast cereal. These are proving to be a super easy and portable snack. They are also a good pooping food - a good tip for those of you out there with constipation-prone kiddos. In addition, raisins are high in lots of vitamins and minerals, most notably: potassium, iron, manganese, and copper.
PROS: easy, quick snack with a nutrient-packed punch
CONS: don't go overboard unless you really enjoy changing poopy diapers