How to make the perfect cottage pie

Ingredients

• 2 medium potatoes peeled and halved
• 3 medium large, sweet potatoes, peeled and quartered
• 1/3 cup olive oil
• 2 tbsp olive oil
• 1 kg beef mince
• 2 large onions finely chopped
• ¾ tsp ground cinnamon
• ½ tsp black pepper
• 2 medium zucchinis chopped into 1 cm cubes
• 1 large eggplant chopped in into 1cm cubes
• 2 cups of sliced Swiss brown or button mushrooms
• 2 x 170gm can tomato paste
• 2 cups beef stock or water
• 2 tbsp chopped fresh parsley
• Sea salt flakes