Spicy lamb keema pau

Name: Spicy lamb keema pau
Ingredients: 2 tbsp vegetable oil; 1 onion chopped; 2 garlic cloves crushed; 1 red chilli finely chopped (deseeded if you don't like it too spicy); 700g lamb mince; 1 tbsp tomato purée; 2 tsp medium curry powder; 1 tbsp plain flour; 400g can chopped tomatoes; 2 tbsp mango chutney; 4 eggs; chopped coriander leaves, shallots and shredded carrot, to serve; 250ml full-fat milk; 1 tsp clear honey; 25g butter chopped; 400g strong white bread flour; 2 tsp cumin seeds plus a pinch for sprinkling over; 7g fast-action dried yeast; 1 egg beaten