Once all halves have been cut, you can either assemble the halves to make one, two-layer cake, or two single-layer butterfly cakes. Read more: 11 Store-Bought Chocolate Cakes, Ranked Worst To Best ...

Bake for 8–10 minutes, or until cooked when a skewer inserted in the centre of a cake comes out clean. Allow to stand in the tins for 2 minutes, then transfer to a wire rack to cool completely.

The Bonny cakes are a soft sponge cake, topped with icing and a sugary butterfly slice. They will packaged in 100% recyclable materials, reports Wales Online.