Add the beef mince and onion to a large frying pan and cook for around 5–6 minutes until the mince is browned. Stir in the grated carrot, tomato purée, chopped tomatoes, oregano, basil and garlic granules. Season with salt and pepper. Leave the bolognese to simmer for around 15–20 minutes, until thickened. You want it fairly thick so the naan doesn’t become soggy.