My son loves everything related to Astronomy. So for his birthday, his mom came up with a space theme. He and his friends were thrilled with the alien games and music.
For the cake, since mine is a simple home kitchen, decided to keep it super simple.
- Two cakes. One slightly larger than the other.
- Chocolate Ganache. Melt compound chocolate in a microwave. Do it in bursts of 30 seconds. Remove. Stir. Keep repeating till its fully melted. Add in cream. Stir. Keep adding cream, about a tablespoon at a time. Till the texture is very silky and smooth. When its perfect, it will not stick to either dish or the stainless steel whisk.
- Butter cream. Soften unsalted butter. Add icing sugar. Icing sugar contains an additive, which ordinary powdered sugar lacks. So you cannot simply grind sugar in a mixie and use it. Follow instructions on the icing sugar box on how much butter to sugar ratio to use.
- A pack of Oreo biscuits.
The cakes must have fully cooled before you do anything. Spread a layer of chocolate ganache on top of the larger cake. Place the smaller cake on top of it. Trim the sides so that they take a smoother shape. Try and create a curve. You can make a full dome or keep a minor angle. Cover the cakes with chocolate ganache. Use a icing spatula.
The cake trimmings that you removed. Mash them up. Crush a couple of oreo cookies. Mix the mashed cake trimmings and the oreo cookies. Spread this rough and course mixture on top of the cake.
Apply butter cream frosting. Do NOT do a smooth job. There must be a bit of roughness all over the cake. It is after all a rock from space .
Decorate with some astronauts on top.