Method

1. Heat the oil and butter in a frying pan and cook the onion for 2 minutes
2. Add the tomatoes and mushrooms to the pan and cook for a further 3-4 minutes. Season with salt and pepper
3. Toast the crumpets in a toaster for 2 minutes or until lightly browned
4. Spoon the vegetables over the crumpets and sprinkle with ground black pepper to serve