Lay chicken in baking pan just large enough so chicken covers pan. Then dip the sour cream chicken into the Parmesan cheese and coat the entire chicken breast.
Put it into the oven until the chicken is fully cooked thoroughly 25-30 minutes.
Chicken breast with sour cream and parmesan. Pour the Caesarsour cream mixture over each breasts then sprinkle grated Parmesan cheese on top. Whisk together Caesar dressing and sour cream in a small bowl. In a bowl mix mayonnaise sour cream ½ cup Parmesan cheese salt.
Preheat oven to 375. Pat chicken dry and place in a greased 9×13 pan. Fully coated and covered with sour cream and parmesan cheese.
Add sliced cheese on top of chicken breasts. Mix sour cream mayo cream and dressing mix together. Not too big Cover chicken with mushrooms.
This is what your chicken should look like in the pan.