Bring a medium saucepan of water to the boil for the noodles. Thinly slice the tofu. Slice the zucchini. Trim the beans and halve. Crumble 1 stock cube* into a heatproof jug, add 125ml (½ cup) boiling water and stir to dissolve.
Step 2 — Cook tofu
Heat 1 tbs oil in a large deep frypan over medium heat. Cook the tofu, stirring occasionally, for 2 mins or until golden.
Step 3 — Cook noodles
Cook the noodles in the pan of boiling water for 7 mins or until tender. Drain, then rinse under hot water to prevent the noodles from sticking.
Step 4 — Start curry
While the noodles are cooking, add the curry paste to the tofu and cook, stirring, for 2 mins or until fragrant.
Step 5 — Cook curry
Add the stock, coconut milk, 2 tsp soy sauce and ½ tsp sugar to the tofu and stir to combine. Scrunch the lime leaves to release the flavour, add to the curry and bring to a gentle simmer.
Step 6 — Finish curry and serve
Add the zucchini and beans to the curry. Cook, stirring occasionally, for 3-4 mins until the vegetables are just tender. Divide the noodles and curry among bowls to serve.