Chocolate cake with crème de menthe frosting

This is the recipe of the cake I made for Calum's birthday. It's based on a chocolate cake recipe from the BBC website, but with a crème de menthe buttercream rather than the chocolate ganache they suggest.

Ingredients:

140g/5oz butter, softened

280g/10oz icing sugar 

1-2 tbsp milk

4 tbsp crème de menthe (you can also use mint flavouring and some green food colouring if you want to get rid of the alcohol content)

Equipment:

2x 20cm diameter sandwich tins

pallet knife

Cake

1. Follow the BBC recipe (linked above) to achieve a moist and fudgy cake, or any recipe of your choosing.

Crème de menthe frosting

2. Beat the butter until fluffy then whisk in half the icing sugar until combined. Beat in the crème de menthe and the rest of the icing sugar.

Construction

3. Once the cake is cool, use the pallet knife to spread about a third of the frosting onto one cake and use it to sandwich the two halves together. Spread the rest of the frosting onto the top, decorating it to your choosing. As it was for Calum's birthday, I put a letter C on the top with edible silver glitter.