Avo freezes great, my girl has Avo most days. I buy them when they're a good price, lightly mash and put them into ice cube trays. They stay nice and green & defrost fine. I do the same as the above poster with the fresh Avo, put the halves back together, wrap & into the fridge.
My dd loves Avo & apparently it's the closest food you can get to that fat content of breastmilk.