The trick to keeping your food moist is primarily in how you wrap it. You'll want to follow a two-step method here to prevent freezer burn...before you seal your burritos in airtight zip-top bags, wrap them in foil so that they're not directly exposed to any open air.
If you want to be extra-organized with your freezer burritos, you can also write what type each one is along with the dates on the foil with a Sharpie.
Try to eat them within three months of freezing since their water content can start to decrease after this time. If you're using the oven to reheat, keep your food wrapped in its foil.
[
Collection
]
[
|
...
]