"Mum Goodwin's Chocolate Cake" (from Julie Goodwin's book Our Family Table) makes a nice adaptable chocolate cake base. And I find it kind of fascinating that it tastes so good when it doesn't actually contain any chocolate!
You don't add the cocoa and water mixture into the batter until the final mixing stage, so you get to see it go from what looks like a vanilla cake to suddenly very definitely chocolate!
A word of caution - if you make the full recipe as written into cupcakes you get around 40 little cakes out of it! So since this first run I've taken to halving it and getting the more respectable number of around 20, which you could stretch to an even 2 dozen if you made them a little on the light side.
It was a Friday night and I was feeling experimental so I put strawberry jam in the centre of some of the cupcakes.
In others I put little mint chocolate logs. I didn't realise until after baking that these were, sadly, a bit on the chewy side, but it still added an extra bit of pepperminty flavour.
I pressed Oreo cookies into the top of some of the cupcakes, because you can't really go wrong with the chocolate cake and Oreo pairing.
I tried out a "marshmallow icing" trick that I'd read of on a blog ages ago. When the cupcakes were nearly baked, I took them out and placed a marshmallow on top of each one, then finished baking them. Finally I put them under the grill for a few minutes to brown them a little... but these turned out to be a bit of a mess! Not at all how I imagined they would go, but maybe I baked the marshmallows too long, and they tasted fine anyway.
I had been meaning to make peppermint icing for a very long time, and finally I did it. Yum! Just add peppermint essence to your buttercream instead of vanilla or rosewater.
I enjoyed adding random extras to my cakes, but these basic swirls of peppermint on chocolate definitely looked the classiest.
I added just a dob of icing to the ones with jam or Nutella baked in (did I mention Nutella? I didn't end up eating one of them, but Nutella can't really fail as far as I'm concerned).
This chocolate cake recipe is going on my list of staple bases, and now I have 3 standard buttercream flavours (vanilla, rosewater and peppermint) to mix and match with :)