Defrosting pureed chicken for baby?

The fats most likely have separated in the chicken to change the consistency. I always have an issue with defrosting meats, and I prefer not to use the microwave. I usually mix it with some other vegetables or pureed brown rice for my son and he eats it all up. I still freeze the meats alone though, and then mix before serving with something else. I like everything nice and separated, but that's a personal preference.