Hi Wendy,
yes I puree and freeze into icecube trays and then transfer to freezer bags, makes it really easy for distributing portions and also for mixing different fruit and veg. The things I remember off the top of my head that you cant freeze are advocada and banana. This is how long they can stay in the freezer, fruits 6 months, veg 6 months, purees with milk 4-6 weeks, fish 10 weeks, red meat and chicken 10 weeks.
HTH
Fiona