For the butter bean mash, spray a small non-stick saucepan with cooking oil and place over a medium heat. Add the onion and cook for 3 minutes. Add the garlic and cook for 1 further minute.

You don’t want the garlic to become at all browned or crispy ... To serve, divide the butter bean mash between four plates. Top with four mushroom halves per plate and spoon over a generous ...

For the butter bean mash, spray a small non-stick saucepan with cooking oil and place over a medium heat. Add the onion and cook for 3 minutes. Add the garlic and cook for 1 further minute.