2 lg Boneless chicken breasts
- split
Salt and pepper; as desired
1/2 lb Mushrooms
6 tb Olive oil
2/3 c  Sherry vinegar
2 tb Tomato paste
2 tb Chopped parsley

TRIM EXCESS SKIN from the breasts. Sprinkle breasts with salt and pepper
and set aside. Quarter larger mushrooms, halve smaller ones and set aside.
Heat 1 tablespoon oil in an aluminum skillet or frying pan over high heat
and brown chicken on skin side. Transfer the chicken to a plate and pour
off fat. Reduce heat to medium, pour in vinegar and dissolve the tomato
paste in it. Replace chicken in skillet, skin side up. Cover and cook 3
minutes. Uncover; cook until chicken is done, 6 minutes. While the chicken
is cooking, heat 1 teaspoon oil in another frying pan and cook the
mushrooms about 3-to-4 minutes. Arrange chicken and mushrooms on platter.
Whisk in the rest of the olive oil; mix in parsley. Pour juices that have
collected on the platter into sauce. Pour sauce over chicken and mushrooms;
serve immediately.