Mash: Boil butternut and potato until soft. Drain, add butter, milk, salt and pepper. Mash and set aside.
Soften onion in olive oil. Add mince and once browned add beef stock, lentils, carrots, peas, Worcestershire sauce and season with salt and pepper.
Simmer for 30 minutes or until the lentils have all but disappeared and carrots are soft (add more water as needed).
Add bisto paste and stir through to thicken the sauce to a gravy consistency.
Transfer mince mixture to a casserole dish, top with mash and bake in the oven at 180°C for 15-20 minutes or until golden and bubbling.
5 Vegetable Cottage Pie https://dishanddelite.com/5-veggie-cottage-pie/