Under the sea cookies

Everyone’s got their favourite undersea character - and here's your chance to create them in mermaid biscuit form!

Brought to you by Lakeland


Lakeland’s huge range of cutters help you stamp out a whole shoal of fishy friends and mermaid biscuits, and we can't help but think these are the perfect addition to any under-the-sea themed party!


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For the cookies:

  • 100g (3½oz) butter, softened
  • 75g (2¾oz) caster sugar
  • 1 free-range egg yolk
  • 200g (7oz) plain flour
  • 1-2 tbsp milk

For the royal icing:

  • 15g (½oz) free-range egg white
  • 455g (1lb) icing sugar
  • 75ml (2¾fl oz) water

To Decorate:

  • Wilton® Colour Right System
  • Scrumptious Sprinkles Unicorn Sprinkletti Mix or Under the Sea Sprinkletti Mix


  • Under the sea cookie cutters


Preheat the oven to 200°C/Gas Mark 6. Lightly grease three baking trays. Place the butter and sugar in a bowl and cream together until light and fluffy.
Separate the egg yolk from the white and set the white aside. Beat in the egg yolk. Sift in the flour and mix well with enough milk to give a fairly soft dough.
Knead the mixture gently on a lightly floured surface and roll out to 5mm (¼in) thick. Cut into your chosen cookie shapes, place on the prepared baking trays and bake for 8-10 minutes.
To make the royal icing, first sieve the icing sugar into a bowl. Add the egg white and combine gently. Add the water and mix with a spoon until combined. Using an electric mixer, mix on low for up to 15 minutes until you have a nice light texture.
To colour your icing, first mix colours in a ramekin or small bowl, then add small amounts using a cocktail stick to achieve the colour you want – you will need approx. 2 tbsp of royal icing to 2-3 touches from a cocktail stick. We used the following number of drops from the Wilton Colour Right System: Blue: 4x blue Lilac: 6x red, 2x blue Jade green: 8x blue, 4x yellow Pink: 8x red, 1x blue, 6x pink
Pipe the outline on the biscuits using a disposable piping bag fitted with a nozzle.
When the outline has dried, let down your icing by adding a few drops of water until it has the consistency of thick yoghurt. Spoon the let-down icing into a piping bag, snip off the tip to make a very small hole and fill in the middle of your icing design. Use a small decorating brush to help spread it to the edges and remove any air bubbles. Leave to dry completely unless you’re adding sprinkles to the wet icing.

Decorating tips

Mermaid: Ice the face, arms and middle first and leave to dry, then ice the rest. Add sprinkles to her tail when the icing is wet. When fully dry, paint on her face using a black edible food pen. Turtle: Add sprinkles to the wet icing to make the shell.
Shark: Pipe on the teeth and eye using white icing.
Seahorse: Pipe a wavy snail trail from its head to tail and three little dots in rows on its fin. Attach tiny pearls and stars to this icing, then paint on eyes.
Starfish: Stick a large pearl from the sprinkles in the middle, then pipe small dots of white icing along the centre of each arm.
Last updated 9 months ago

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