Cheese n Onion pie. 60g/2oz butter, cut into small pieces. 60g/2oz lard, cut into small pieces. 200g/7oz self-raising flour, plus extra for dusting. pinch salt. For the filling. 25g/1oz butter. 3 onions, roughly sliced. salt and freshly ground white pepper. 250g/9oz Lancashire cheese, (1/2 Feta & 1/2 strong cheddar substitute) coarsely grated. milk, for sealing and glazing.