In a small bowl, combine ½ tsp salt
with all the ingredients apart from the
ciabatta. Mash together with a fork so
everything is combined.
Heat oven to 200C/180C fan/gas 6.
Using a bread knife, cut diagonal slices
into the loaves, about three-quarters
of the way through. Spread the butter
into the slices, then wrap each loaf in a
double layer of foil. Bake in the oven for
15 mins, then open up the foil and bake
for a further 10 mins until crispy.