1
Preheat the oven to 180°C/350°F/Gas Mark 5.
2
In a large bowl, add the flours, baking soda and seaweed. Mix together and make a well in the centre.
3
In a large jug, add the buttermilk and the egg, giving a gentle whisk. Pour the mix into the well within the large bowl.
4
Add in the cheeses, leaving some of the cheddar for later, and most of the thyme. Combine the mix with a wooden spoon until you have a rough dough.
5
Turn out the dough onto a lightly floured chopping board and gently knead.
6
Add the dough to a loaf tin and brush lightly with any leftover buttermilk/egg mix you have. Add in the remaining thyme sprigs and cheese over the top of the loaf.
7
Bake in the oven for 35-40 minutes. Allow to cool before slicing and enjoying with a little butter or an extra slice of Gubbeen cheese!