1 Place chicken breasts in pan with broth (I have used frozen, as well as fresh-frozen adds to your cooking time). 2  Bring to a boil.3  Turn heat to medium, and let simmer covered for 15-20 minutes (around 10 minutes if yours are defrosted), turning occasionally. Place chicken breasts in pan with broth (I have used frozen, as well as fresh-frozen adds to your cooking time). 2  Bring to a boil.