Preheat oven to 350 degrees.
Place taco seasoning mix and turkey cutlets in a large zipper-topped plastic bag; seal bag and shake to coat well. Place coated turkey in a baking dish lightly coated with olive oil; bake for 25 to 30 minutes or until turkey is cooked through.
Top with salsa during the last 5 minutes of cooking time; serve with sour cream.