Preheat the oven to 250 degrees C, with a tile inside the oven and a baking sheet placed at the bottom.
Place the loaves in the oven (by pulling the parchment paper corners) and pour 150ml water in the hot baking sheet at the bottom - to create steam in the oven. Quickly close the oven door.
After 10 minutes turn heat down to 200 degrees C and bake for 40-50 minutes until golden brown.