Preheat oven to 180C Gas Mark 4. Grease and flour a 20cm square cake
tin. Melt the treacle and mix with the
buttermilk. Sift the dry ingredients together and
rub in the margarine. Pour in the treacle and buttermilk and
mix to a soft consistency. Turn in to the cake tin and bake for
about 60 minutes, until golden and cooked through. Cover with foil during cooking, if
necessary, to prevent over browning.
Makes 12 slices
If you like a strong black treacle flavor,
use 3 tbsp; if you prefer a milder taste, use 2 tbsp.