Mix together the Probiotic Yoghurt, sugar, eggs and vanilla. Then gently melt the chocolate over a low heat with the coconut oil and let the mixture cool.
Whisk the chocolate into the Probiotic Yoghurt mixture and slowly stir in the sieved flour, cacao and salt.
Then add the chopped walnuts. Pour the mixture into a lightly greased 8-inch baking dish and bake for 35 minutes. Enjoy!