Ranch Cheddar Chicken

½ c ranch dressing
1 TBS flour
4 chicken breasts, skinless and boneless
¼ c shredded cheddar cheese
¼ c grated parmesan cheese

Preheat oven to 375F. Mix together dressing and flour. Coat each chicken breast with mixture. Arrange on a baking sheet. Combine both cheeses and sprinkle over chicken breasts. Bake 25 minutes and serve.