Preheat your oven at 180 c fan/200c/Gas mark 6/400F.
Place the mushrooms on a baking tray (you may want to line it too) and spray the mushrooms with frylight or cooking oil spray and bake for 15 minutes.
Meanwhile, in a bowl, mix together the remaining ingredients and once the mushrooms have cooked, equally spoon over the garlic mixture on to each mushroom.
And pop them back in the oven for another 10 minutes and once done, garnish with parsley and serve.