Preheat your oven to 180°C (160°C for fan ovens) or gas mark 4. Grease and line your cake tins.
In a large mixing bowl, cream together the softened butter and caster sugar until light and fluffy. Add the eggs one at a time, beating well after each addition.
Sift in the self-raising flour, cocoa powder, and baking powder. Gently fold the dry ingredients into the wet ingredients until well combined. Add the milk to achieve a smooth consistency.
Divide the batter evenly between the prepared cake tins. Smooth the tops with a spatula and bake in the preheated oven for approximately 25-30 minutes or until a skewer inserted into the center comes out clean.
Allow the cakes to cool in the tins for a few minutes before transferring them to a wire rack to cool completely.
In a separate bowl, make the peppermint frosting by beating together the softened butter, icing sugar, cocoa powder, peppermint extract, and milk until smooth and creamy.
Once the cakes are completely cooled, spread a layer of peppermint frosting on top of one cake layer. Place the second cake layer on top and frost the entire cake with the remaining frosting. Ensure a smooth and even finish.
Decorate the cake with Mint Matchmakers and Aero Bubbles. Gently press them into the frosting to secure. Add a festive touch by tying a green ribbon around the base of the cake.
Slice and serve this indulgent Chocolate Peppermint Cake to delight your taste buds and those of your guests. The combination of rich chocolate, refreshing peppermint, and crunchy minty toppings is sure to make it a crowd-pleaser.
Store any leftover cake in an airtight container in a cool place or refrigerate if needed. Enjoy within a few days for the best taste and texture.