• Bring a medium saucepan of salted water to the boil. • Peel potato, then cut into large chunks. • Thinly slice leek. Finely chop carrot. • Rinse red lentils.

• In a large frying pan, heat a drizzle of olive oil over medium-high heat. Cook leek and carrot until softened, 4-5 minutes. • Add plant-based butter, garlic paste, Mumbai spice blend, mild North Indian spice blend and tomato paste. Cook until fragrant, 2 minutes. • Add lentils, vegetable stock powder, coconut milk, the water and brown sugar. • Bring to a simmer, then cover with a lid (or foil) and cook, stirring occasionally, until the lentils are soft, 20-22 minutes. • Season with pepper to taste. Stir through baby kale until wilted.

• While the lentils are cooking, cook potato in the boiling water over high heat, until easily pierced with a fork, 10-15 minutes. Drain and return potato to the saucepan. • Add plant-based milk and a generous drizzle of olive oil. Season with salt and pepper, then mash until smooth. Cover to keep warm.

• Preheat grill to high. Transfer lentil filling to a baking dish, then top with potato mash. • Run a fork over mash to create an uneven surface. Sprinkle with brown mustard seeds and drizzle with olive oil.

• Grill pie until lightly browned, 10-15 minutes.

• Divide Indian lentil and veggie curry pie with mustard seed mash topping between plates. Enjoy!