Combine all the ingredients for the peanut sauce together and loosen with 3-4 tbsp water until the mix is a few shades paler and has a pourable consistency. Set aside.
Cook the noodles according to packet instructions then drain and toss with 1 tbsp sesame oil. Keep warm.
Steam the broccoli over a pan of boiling water for 4-6 minutes – when it’s ready the tip of a sharp knife should pass through the stem easily.
Meanwhile, heat the remaining 1 tbsp oil in a small frying pan. Add the chilli, breadcrumbs and sesame seeds and stir over a medium heat for 3 minutes until the breadcrumbs turn golden brown and crispy.
Lift the noodles onto a platter, top with the mint, broccoli and breadcrumbs and drizzle over some of the peanut sauce, with the rest in a bowl at the table.