Method

• 1.
  Preheat the oven to 200°C.
• 2.
  Sift the flour into a large bowl. Add the potato, onion, sea salt and black pepper and stir to combine. Fold in the rosemary, 90g of the cheese and 60g of the olives.

• 3.
  Beat together the egg, milk and mustard in a jug and pour into the flour mixture. Stir until a rough dough forms.
• 4.
  Place the dough on a well-floured bench or board and use your hands to shape into a round. Transfer to a baking sheet, dot with remaining cheese and olives and extra rosemary sprigs.
• 5.
  Dust with a little flour and bake in the oven for 45 minutes. Serve warm.