Sweet Potato pie with mince and lentils

1. Heat oven to 200C/180C/Gas 4. Heat oil in a large frying pan and add the minced beef. Cook
for 5 minutes until browned all over, then add the carrot, onion, garlic, pepper and celery
and cook for 2 more minutes.
2. Stir in the passata/tinned tomatoes, tomato puree or ketchup, worcestershire sauce, salt
and pepper, red lentils and beef stock. Simmer for 20 minutes and stir in the peas.
3. In a saucepan of boiling water, add the diced potatoes and sweet potatoes. Simmer for 20-
25 minutes until the potatoes are cooked.  Drain and mash potatoes with margarine/butter,
milk and season with salt and pepper.
4. Spoon the mince into a large roasting dish. Cover with mashed potato and score with a fork.
If using cheese, sprinkle on top. Bake in the oven for 25-30 minutes until browned on top.
5. Eat on its own or serve with a green salad.