Shepherd's Pie with vegetable-based "Beef"

Description
Vegetarian Shepherds Pie is a vegetarian Vietnamese recipe.

Ingredients

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

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