Easy Chicken with basil

1 tablespoon butter or 1 tablespoon margarine 1 lb boneless skinless chicken breast , cut into 1/ 2-inch pieces 1/4 cup chicken broth (14-1/ 2 oz can) or 1/4[...]

2 teaspoons olive oil 1/2 cup sliced leek 1/2 lb chicken breast , strips (thin sliced for stir frying) 1 (14 1/2 ounce) can diced tomatoes seasoned with basil[...]

1/4 cup extra virgin olive oil 1 onion , chopped 4 garlic cloves , minced 1 carrot , peeled and finely chopped 1 stalk celery , finely chopped 1 lb shredded[...]