Preheat oven to 375 degrees. In a bowl, place the one cup Caesar dressing. In another bowl, combine the cheese and crushed croutons.
Dip each chicken breast into the Caesar dressing, then the crushed crouton mixture. Place the chicken on a baking tray.
Bake chicken at 375 degrees for approximately 25-30 minutes. Flip the chicken breasts halfway through baking time. Remove chicken from oven when the center of the chicken reaches 170 degrees farenheit with a meat thermometer. Serve chicken on a bed of spinach. You can opt to wilt the spinach prior to serving if you would like.
Notes
Store leftovers in an airtight container for several days. Reheat.