Cut a two inch pocket into the thickest part of each chicken breast. Stuff each pocket with spinach and feta cheese and seal with a tooth pick. Season each breast well with salt and pepper. Heat oil over medium high heat and saute the breasts until golden brown on all sides. Remove chicken to a plate and cover with tin foil. Add onion to remaining oil in pan and cook for 2 minutes. Stir in garlic and cook for 30 seconds. Stir in white wine and bring to a simmer. Stir in tomatoes and basil. Bring to a simmer and return chicken to the pan and cover. Simmer for 10 minutes. Remove lid and season sauce to taste. Serve with butter noodles tossed with parsley.
Recipe Courtesy of Food Network Kitchens