Hi Sal
According to Annabel Karmel, you can't freeze banana & avocado, but everything else seems to be ok. I thought mashed potato might go a bit weird once frozen, but actually is fine! I have frozen sweet potato, butternut squash, broccoli, green beans, spinach, carrots, parsnips, cauliflower, potato, tomatoes, peppers, apples, pears, apricots, peaches, blueberries, ummm, I am sure there are more but you know it's late on Sunday and I've had a big glass of wine!
hth
kathryn x