Vegan sweet potato shepherd's pie - Scottish Slimmers

Ingredients

• 600 g sweet potato
• 500 ml vegetable stock
• 100 ml red wine or water
• 400g tin of chopped tomatoes
• 100 g red lentils (soaked)
• 1 medium leek roughly chopped
• 1 red onion (sliced)
• 2 carrots (medium) (sliced)
• 2 tbsp tomato puree
• 1/2 tsp ginger
• 2 cloves garlic (grated)
• 1 tsp paprika
• 1 tsp turmeric
• 1 tsp ground cumin
• 1 tsp dried coriander