So delicious and easy – this is a new family favourite in our house!
Preheat the oven to 180C and grease and line a 24cm cake tin.
Combine the buttermilk, oil, eggs and vanilla in the bowl of your Thermomix bowl with the paddle attached and beat for 1 minute at speed 4, add the dry ingredients and mix again at speed 4 for 10 seconds.
Now add the coffee and mix for 10 more seconds.
Pour batter into prepared cake tin, smooth over the top and bake for 35 minutes or until the cake is firm to the touch and just beginning to pull away from the tin’s sides.
Let cool in the cake tin for 10 minutes then turn out onto a wire rack to cool completely while you make the icing.
For the icing, combine all ingredients in the bowl of your Thermomix with the butterfly and beat speed 4/1 min until light and fluffy.
To frost the cake, cut in half horizontally with a bread knife, spread half of the frosting on the cut-side of one piece of the cake, top with the other and the remaining frosting.
Sprinkle with the chocolate chips.