You can put just about any filling you want inside this Brazilian Pastel recipe. For chicken, you use either ground or shredded. For ground chicken, simply swap in the chicken in place of the beef in this recipe. For shredded, you can shred the cooked chicken and then mix it with the seasonings in the pan as you would the the ground chicken. For the shredded chicken, you can also add in shredded cheese or 1/4 cup cream cheese just to help bind the filling a bit.