Stuffed Portobello Mushrooms

My sister is vegetarian and this is what i have made for her recently as a replacement for meat in a dinnerparty:

Ingredients
4 big portobello mushrooms
a spring onion
some chives
some parsley
a clove of garlic
grated cheese

Preparation
Preheat the oven, switch on grill.
Remove the stems carefully together with the brown gills, and chop into small pieces, chop the spring onion, squeeze the garlic and fry all this shortly with some olive oil.
Remove from the heat and add the parsley and the chives (both chopped)
Place the mushroomcaps upside down and place the mixture where the gills once where.
Sprinkle with the grated cheese
Slowly fry them in a small pan in some olive oil
Place the mushrooms under the grill for a nice cheese crust.

You can skip the frying part and let them cook in the oven for a while, but i prefer to fry them in order to get a nice and juicy result.