Veggie Keema Pie | Slimming & Weight Watchers Friendly

Name: Veggie Keema Pie | Slimming & Weight Watchers Friendly
Prep time: 20 min
Cook time: 50 min
Total time: 1 h 10 min
Cuisine: Indian
Ingredients: 2 tins green lentils ((or 400g ready cooked lentils)); 1 onion (diced); 2 peppers (diced); 2 carrots (peeled and diced); 150 g frozen peas; 1 cm piece fresh ginger (grated); 2 tsp garlic granules; 2 tbsp curry powder; 3 tbsp tomato puree; 2 vegetable stock cubes (made up with 450ml (2 cups) boiling water); juice of half a lemon; low calorie cooking spray; salt and pepper to taste; 1/4 tsp Marmite; 500 g potatoes ((Maris Piper are ideal)); 250 g sweet potatoes ((or swap for an extra 250g of potato if you prefer)); ¼ tsp turmeric; salt and pepper to taste