Vegetarian

Mix tahini with lemon zest and juice and 50ml cold water to make a runny dressing; season and set aside.
Heat olive oil in a wok or large frying pan over medium-high heat; add chopped red onion and fry until starting to soften and colour.
Add crushed garlic, sliced yellow pepper, green beans and sliced courgette; fry for 5 minutes, stirring frequently.
Tip in shredded kale and lentils and the tahini dressing; keep on the heat and stir until the kale wilts and everything is coated.