Fill the kettle and boil it. Halve the squash. Scoop the seeds out of one half. Peel it. Coarsely grate the flesh (see our tip about what to do with your spare half). Peel and grate the garlic and ginger.
Trim the leek. Slice a cross shape in the top and pull the leaves open so you can rinse inside. Shake it dry and thinly slice. Remove any tough stalks from the kale. Finely shred the leaves. Rinse well.
Tip the rice into a small pan. Pour in 250ml hot water from the kettle. Cover. Bring to the boil. Turn the heat right down. Simmer for 6 mins till all the water has been absorbed. Take off the heat. Steam, lid on, for 2-4 mins till the rice is cooked.
Heat a splash of olive oil in deep frying pan or wok. Add the beef and stir-fry over a high heat for 3-4 mins till browned.
Add the leek, squash, ginger, garlic and star anise to the wok. Stir-fry for 5 mins till the veg have softened. Add the kale and stir to mix. Add 3 tbsp hot water from the kettle. Season.
Pop on the lid. Cook the stir-fry over a medium heat for 2-3 mins to wilt the kale. Fish out the star anise from the stir-fry. Taste and adjust the seasoning if you think it needs it.
Fluff the rice up with a fork. Divide between two bowls or plates. Top with the beef stir-fry and serve straight away.