1. Heat the olive oil in a large frying pan.
2. Add the mushrooms, stalk facing up and gently pan fry until almost cooked through.
3. Remove the mushrooms from the pan onto a baking tray.
Crumble the leftover stuffing and stilton cheese in each mushroom.
4. Sprinkle over the thyme leaves if using and season with black pepper.
5. Place under a pre-heated grill and grill until the cheese has melted.

Fantastic served with toast or as a side dish.