Trim the spring onions and slice diagonally. Thickly slice the chestnut mushrooms.
Heat the oil in a large frying pan and fry the mushrooms over a medium heat for 4-5 minutes. Add the spring onions and cook for a further 2-3 minutes.
Meanwhile, boil the noodles according to packet instructions, then drain and return to the saucepan.
In a mini-chopper, food processor, blender or similar, blitz together the peanut butter, sesame oil, ginger, lime juice, soy sauce, water and chilli until it becomes a smooth sauce.
Pour the sauce over the noodles and return to the heat for 1-2 minutes until the sauce is heated through.
Divide the noodles between two bowls, then top with the mushrooms and spring onions. Sprinkle each portion with the chopped peanuts and coriander and serve immediately.
Video
Notes
Don't over-cook the noodles, as they will cook for a further minute or two in the sauce.Serve immediately, as the noodles can become dry as the sauce soaks in.