Celery Root or Kohlrabi Casserole

Ingredients

 * 5 large celery roots or kohlrabi
 * 1 onion
 * 2 tablespoons oil
 * 2 tablespoons flour
 * 1 cup milk
 * 1 teaspoon chopped parsley
 * salt

Directions

 * 1) Peel the celery roots, wash and cut into ½ inch slices.
 * 2) Dredge each slice with flour and lightly fry on both sides.
 * 3) Fry the finely chopped onion in the remaining oil, until yellow.
 * 4) Add 1 teaspoon flour and let fry some more.
 * 5) Then add milk and let come to a boil.
 * 6) Place the fried celery in this sauce, salt and simmer, covered, shaking the pan from time to time.
 * 7) At the end add the chopped parsley.
 * 8) In this dish the milk can be replaced with water and added 1-2 tablespoons of tomato sauce.