An easy starter for dinner parties or a simple meal for one served with some fresh crusty bread to mop up the juices.
Preheat the oven to 200C/180C Fan/Gas 6.
Put the portobello mushrooms on a baking tray. Divide the unsalted butter between each mushroom. Season with salt and pepper and put a sprig of fresh thyme in both the mushrooms. Bake for 10 minutes.
Heat the olive oil in a frying pan, add the onion and garlic and fry until soft. Add the chopped mushroom stalks and pepper and cook until softened.
Spoon the mixture into the baked mushrooms. Put the blue cheese on top and sprinkle breadcrumbs all over. Roast the mushrooms for a further 6 minutes, or until the top is golden and bubbling.
Put the mushrooms on a serving plate, sprinkle over the chopped chives and serve.
You could substitute blue cheese for grated cheddar or any other cheese you fancy.
