A hearty meatless take on the classic English cottage pie: a rich lentil, tomato and root-vegetable filling tucked under a golden layer of cheesy mashed potatoes. It comes together in about 50 minutes and is comforting enough that nobody will miss the meat.
In a skillet over medium heat, warm the olive oil, add the onion and sauté until translucent.
Add the garlic and sauté for one minute, then add the carrots, sweet potato and spring onions.
Cook until the carrots are softened.
Add the crushed tomatoes, the basil and the thyme.
Stir in the tomato paste.
Add the cubed tomatoes, the lentils and the vegetable stock.
Simmer for 20 minutes.
Season with salt and pepper, then stir in the nutritional yeast.
Prepare the mashed potatoes:
Boil the potatoes until soft.
Drain them well.
Mash the potatoes until smooth, then stir in the olive oil (or butter) and the grated cheese.
Spread the lentil filling into a baking dish in an even layer.
Spread the mashed potatoes over the lentils in a second layer.
Bake for about 20 minutes, until the top is lightly golden.
Notes
For a vegan version, use olive oil or vegan butter and vegan cheese in the mash. Leftovers keep in the fridge for up to 3 days and reheat well in the oven; you can also assemble the pie a day ahead and bake it just before serving.