Micro Wave baking
I have been making a sourdough wholemeal loaf for some time now in a conventional oven. The 9 inch square tin must be too big as it has too much crust before it is baked in the centre. I have been tipping it out of the tin when partly baked and finishing the bake in the micro-wave oven so that the centre bakes without burning the outside. This is because you cannot use a tin in a microwave oven.