In a 9×13 baking dish spread the olive oil and garlic evenly over the bottom. Lay the chicken breasts on top. Pour the marinara sauce over the tops of chicken breasts and then sprinkle with fresh basil.
Sprinkle half of the mozzarella cheese over the marinara sauce. Layer croutons over the cheese. Sprinkle the top with remaining cheeses. Bake at 350 degrees for 40-45 minutes.
*(During the last 10 minutes of cooking you may need to lay a piece of tin foil over the top to prevent cheese from burning)