Put everything together in a bowl and mix well with your hands. Divide into two equal portions. Generously grease some baking paper with butter. Flatten each portion of dough into a slab no bigger than 1 inch/2.5 thick. Wrap each portion tightly in the baking paper. Bake at 390°F/200ºC for 35-40 minutes or until crust is well-browned.