Preheat oven to 350 degrees. Spray a 9 x 13 pan with non-stick spray and set aside.

In a bowl, combine the cracker crumbs together with the Parmesan cheese and garlic salt.

Add the yogurt to a bowl and stir until smooth.

Dip each chicken breast into the yogurt followed by the crumb mixture. Place each breast into the prepared dish then drizzle with the melted butter.

Bake at 350 degrees for 45 minutes or until fully cooked. While cooking, prepare the sauce to top the chicken with.

In a sauce pan, combine the soup and sour cream together. Heat until smooth and heated through. Serve chicken topped with the sauce. Serves 8.