Shepherd's Pie with vegetable-based "Beef"

Description
Vegetarian Shepherd's Pie is a vegetarian take on the traditional dish.

Ingredients

 * 6 medium potatoes
 * 500 g vegetarian ground beef
 * ½ red pepper
 * ½ onion
 * 3 button mushrooms
 * 2 stalks celery
 * 1 tablespoon flour
 * 2 tablespoons butter
 * 3 tablespoons milk
 * 1 cup parsley
 * salt and pepper
 * olive oil
 * 1½ cups water
 * 1 vegetable stock cube
 * ½ cup cheddar cheese

Directions

 * 1) Boil the potatoes, put the celery, mushrooms, red pepper and spring onions in oil for 2 minutes.
 * 2) Add the "beef", let it 5 minutes, add flour and simmer.
 * 3) Put the other ingredients, and broil them 5 minutes.