Raspberry Chicken

Directions

1. 1
   Flatten each chicken breast by pressing gently with the palm of your hand.
2. 2
   Melt butter in a large skillet.
3. 3
   Raise heat, add chicken and cook about 3 minutes per side or until lightly colored.
4. 4
   Remove chicken from skillet.
5. 5
   Add onion to fat in pan and cook, covered, over low heat until tender, about 15 minutes.
6. 6
   Add vinegar, raise heat and cook, uncovered, stirring occasionally, until vinegar is reduced to a syrupy spoonful.
7. 7
   Whisk in chicken stock, heavy cream and crushed tomatoes and simmer for 1 minutes.
8. 8
   Return chicken to skillet and simmer gently in sauce, basting often, until it is just done and sauce has been reduced and thickened slightly, about 5 minutes; do not overcook.
9. 9
   Remove chicken and arrange on heated serving platter.