Preheat the oven to 180ºc/160ºfan and prep a 12 hole mini cake tin!
Beat together the butter and sugar in a bowl until smooth and creamy
Add in the eggs, vanilla, and red food colouring and beat again
Mix in the cocoa powder
Add the flour, buttermilk, baking powder, bicarbonate of soda and white wine vinegar and beat again
Split between the 12 holes of the mini cake tin
Bake for 20-25 minutes or until the middle of the cakes comes out clean when poked with a skewer! Once the cakes are baked, leave to cool on a wire rack.
Cream Cheese Frosting
Make sure your butter is at room temperature, and make sure to use actual butter and not a spread.
Beat your butter and icing sugar together until light and fluffy - like you would a normal buttercream. I beat them together for about 5 minutes.
Add in your full-fat cream cheese (that has been drained if needed), and beat for about a minute.
Scrape the bowl well, and add in the vanilla. Beat again for another minute.
Scrape the bowl again finally, and beat again if needed. It should be a thick and smooth frosting once finished!
To Decorate
If you want to use some cake crumbs to decorate, level off any peaked cakes,
Split each mini cake in half
Using your piping bag and piping tip, pipe your cream cheese frosting onto the bottom layer of cakes, sandwich, and pipe on the top as well.