My fillings:
Spanish rice; I made it in my rice cooker
Ground beef, browned and seasoned
1 can chili beans
Shredded cheese
Sour cream mixed with my homemade salsa; you can use your favorite
I wrapped the whole stack of tortillas in a damp paper towel and microwaved them together for a minute. Then, one at a time, I placed them on foil and filled and rolled.
Place the burritos into a freezer bag or the bag that the tortillas came in, put the date on it and put in the freezer. I have done this at least 10 times now! I love that I have an instant meal when I'm tired and don't feel like cooking. They heat up beautifully in the microwave.
I actually use pre-cut foil wrappers. You can find them at Dollar General on their $1 isle.