Hemisphere birthday cake

A couple of weeks go, I discovered a hemisphere cake tin in Lakeland and I must say, I think that it is brilliant!  I really enjoy cake making plus icing them.  There are so many possibilities for new ideas; from hedgehogs to ladybirds and spaceships to footballs.  For his birthday cake, my son specifically asked for a white one with red and blue stars as well as spots on it.  I got to work quite promptly as I was quite excited about using my new tin (should I admit to that?).  As my daughter and I have food intolerances, I made a dairy-free, egg-free cake.

Dairy-free, egg-free sponge cake

Serves: 20

Baking time: 2 hours


  • 500g self raising flour plus 3 level teaspoons of baking powder
  • 200g Stork (the block one has no dairy, as opposed to the tub one)
  • 170g sugar
  • 3 level tablespoons of Golden Syrup
  • 560ml soya milk
  • Smooth jam


  1. Cream together the margarine and sugar.  Add the Golden Syrup and stir.
  2. Mix the sifted flour with the baking powder.  Add this mixture to the creamed margarine and sugar gradually,  with a little milk each time.
  3. Stir together until the mixture is smooth.
  4. Bake for 2 hours at 180° C in a heavily greased large hemisphere tin.  Make sure that the tin is kept from moving around (I placed it in a pyrex dish on a baking tray).
  5. Insert a skewer to check if it is cooked (it should come out clean).  When it is ready, the cake should be firm to the touch.
  6. Turn the cake out onto a cooling rack.


Icing the cooled cake

When cooled, the cake is (in my opinion) quite sweet.  For this reason, I only brushed the outside of the cake with smooth raspberry jam that I had boiled and then cooled, rather than adding butter icing.  I could only find jam with bits in so I sieved it into the saucepan so that I would not get any lumps when putting the icing onto the cake. The icing will be held in place better if the jam is used like this.  If you wanted a sweeter version, you could slice the cake in half horizontally and add jam and butter icing.

Icing the cake
Turn out the cooled cake, cover with smooth jam (that has been heated and cooled slightly) then roll out your icing.

After rolling out the ready made white icing, I draped it over the cake and gently smoothed it down.

Icing the cake
Drape the rolled out icing over the cake and smooth down, gently. Add your own decoration!
Adding stars and spots
Adding stars and spots

My son wanted stars and spots so here is the finished cake for our family party:

The finished cake!
The finished cake!

For his party with his friends, I made another cake (as this one went down so well!) but this time it was an alien, to go with his Alien and Robot themed party!

Alien Cake
Alien Cake




  • Loving the alien! I used a pyrex bowl to make my daughter a ladybird cake last year but it wasn’t really big enough. This looks much better!

  • its round, didnt expect that) im not so good with baking but i think its time i give it a go at least once

  • aw how fab , weldone n great cake baking and decorating, I have to admit cakes are the only thing i do not do and can not make unless very flat lol x

  • cassfrugalfamily

    That looks amazing – especially the alien version x x

  • Muslim Mummy

    Loving the alien cake!! It looks fab!

  • Both those cakes look wonderful – think I might try a hemisphere next time around!

  • Wow that is amazing! Fab cakes x

  • Wow what some amazing cakes, I love the alien 🙂 such a talent. x

  • What a brilliant idea – love the alien!

  • These cakes look lovely, very impressive. I didn’t know you could get tins like that.

  • Oh my – that is super awesome! The alien is so cute! x

  • WOW – loving the alien cake, that looks super! I think i’ll be needing to invest in one of these baking tins! xxx

  • The cake looks amazing. You should be very proud of what you have managed to achieve. Thanks for sharing.

  • Wow. I must get a tin like this. Love the look of an alien cake