The second blackberry recipe I tried is adapted from a really nice cherry cake. A few years ago there were about four Rachel Allen 'Bake' books floating around on Christmas morning, that type of thing always happens when you have five sisters! I ended up with one book anyway and have made the Cherry Crumble Cake a few times, really easy and nice with a touch of cinnamon. I knew it would work well with blackberries too!
Rachel actually has the original Cherry recipe here, Perfect! Just substitute the cherries for blackberries.
This cake was amazing straight out of the oven with whipped cream, it was gorgeous for breakfast and I also brought some to work and we all had it mid morning with tea!