Soak your mushrooms for 20 minutes in boiling water. Once they're large and elastic, pick out a handful of mushrooms and set aside for your dish toppings. Chop up the rest of the mushrooms for your wonton filling.
Add your chopped chicken, celery, and mushrooms to a bowl. Pour in the filling seasonings and combine thoroughly.
Get a wonton wrapper and dab two sides with water. Place a teaspoon of the filling into the centre of the wrapper and fold in half. Pinch the two corners, bring them together and seal. You should make a little hat shape, similar to tortellini (see my Instagram video for a tutorial). Repeat this process until all of the filling is used up.
Transfer your dumplings into boiling water and cook for 6 minutes.
Meanwhile, make your peanut sauce by combining all of the peanut chilli oil sauce ingredients in a bowl.
Get your serving bowl and add in a couple of spoonfuls of your peanut sauce. Top with a few mushrooms and your wontons. Cover your wontons with the rest of your mushrooms, peanut sauce, coriander, and a sprinkling of sesame seeds. Serve up and enjoy!