Veggie Keema Pie - Pinch Of Nom

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