6 boneless skinless chicken breast halves (4 ounces each)
2 tablespoons canola oil, divided
8 ounces fresh mushrooms, sliced
1 medium onion, diced
3 cups diced zucchini
1 cup chopped green pepper
4 garlic cloves, minced
3 medium tomatoes, chopped
1 can (6 ounces) tomato paste
3/4 cup water
2 teaspoons each dried thyme, oregano, marjoram, and basil
Chopped fresh thyme, optional
Cut chicken into 1-in. cubes; brown in 1 tablespoon oil in a large skillet. Transfer to a 3-qt. slow cooker. In the same skillet, saute the mushrooms, onion, zucchini and green pepper in remaining oil until crisp-tender; add garlic; cook 1 minute longer.
Place in slow cooker. Add the tomatoes, tomato paste, water and seasonings. Cover and cook on low for 4-5 hours or until the meat is no longer pink and vegetables are tender. If desired, top with chopped fresh thyme.