Spicy Cottage Pie with Bombay Piccolo Parsnip Topping

Ingredients

3 tbsp rapeseed oil
2 medium onion, peeled and chopped finely
3 small garlic cloves, peeled and crushed
1 tsp ground coriander
1 tsp Cinnamon
2.5cm fresh ginger, grated
1 tsp crushed chilli seeds
1/2 tsp. turmeric
2 crushed cardamom pods
1 tsp gram masala