1. Dice the mozzarella and finely chop the sun-dried tomatoes. Chop the basil leaves.
2. Place each chicken breast between plastic wrap and pound with a meat mallet to 1/4-inch thickness. Sprinkle with salt and pepper. Divide the cheese, tomatoes and basil between the flattened chicken pieces. Fold long sides of chicken over cheese and tomatoes; fold up ends and secure with a toothpick.
3. Pour 3 cups of water into the bowl. Place the chicken in the steam basket and place the basket in the Prep&Cook bowl. Launch the P1 steam program for 20 minutes.
4. At the end of cooking, cut into slices, remove toothpicks and serve with pasta.