There are so many different ways you can make a good burrito filling. Some of these ways include chicken, bean, and beef. The type of filling that I have presented for you in this recipe includes bean and beef as well as brown rice. The cooking method is simple, the ground beef is cooked with onion and garlic, various seasonings are added and brown rice is mixed in. Tomato sauce is added to the mixture just before the simmering is finished. You can adjust the seasonings to your taste; add more chili powder, cumin, salt and pepper as desired. You can add different types of cheese to the burritos if you want, or even melt cheese on top when they are finished. What I like to do is put a little enchilada sauce on top of the wrapped burritos, add cheese, and place into the oven until the cheese has melted. You can also add additional toppings such as lettuce, tomato and sour cream. This recipe can easily be split in half. Enjoy.