Nutrition: per serving
Heat the oven to 190C/170C fan/gas 5. Whisk the flours, oats, bicarb and salt in a large bowl. Pour the stout and buttermilk into a jug and whisk in the treacle, then pour into the bowl with the oats. Mix well with a wooden spoon until combined.
With heavily floured hands, shape the dough into a 20cm round and slide onto a lined baking tray. Flour the handle of a wooden spoon and, holding it horizontally, push to the bottom of the loaf to make a cross. Sprinkle with a handful of oats. Bake for 40-50 mins or until the loaf sounds hollow when tapped on the bottom. Leave to cool slightly.
Serve warm with plenty of salted butter.
