This pirate themed birthday cake is perfect for your swashbuckling celebration, including step by step instructions on creating a treasure chest full of booty!

Photos
Supply List
Expand all steps
You Will Need
8” Round Cake (3” Deep)
6” Round Cake (5” Deep)
Rice Krispie Squares x3 (for Treasure Chest)
Chocolate Coins
Round Bright Blue Cake Drum Board-10” (06DBBRWD10)
Double Thick Round Silver Cake Card -6”  (06DTR6)
Renshaw Vanilla Frosting - 3kg (04956)
Colour Splash Food Colouring Gel-Blue-25g (0675061)
Colour Splash Food Colouring Gel-Soft Caramel-25g (0675079)
Culpitt Cake Decorating Sugarpaste Icing-Brilliant White- 1kg (0674227)
Cake Star White Modelling Paste-100g (75001) x2
Colour Splash Food Colouring Powder-Matt-Nutmeg (75126)
Colour Splash Food Colouring Powder-Matt-Ocean Blue (75112)
Colour Splash Food Colouring Powder-Matt-Nude (75125)
Colour Splash Food Colouring Powder-Pearl Shimmer (75084)
Colour Splash Edible Pen-Black (75141)
Culpitt Pirates Sugar Decorations-Pack of 12 (06325)
Culpitt Cake Decorating Sugarpaste Icing-Chocolate Flavour-250g (74217)
Culpitt Gold Lustre Modelling Paste-100g (74240)
Pavoni Silicone Sugarcraft Mould-Beads (99921)
Various Gold Dragees/Sprinkles (DP614A) (25046) (25023) (25009)
Culpitt White Plastic Cake Dowel Rods-Pack of 4 (4802)
 
 
Bottom Tier

Place the 8" cake in the centre of the blue drum board and cover in frosting.

Colour approx. 600g of frosting with the blue food colouring, leave to one side and measure out 200g of plain white frosting too.

Using a palette knife, take some blue and scrape it up the side of the 8" cake adding in some white towards the top to create the crest of the wave. Continue with this around the cake, adding in the white fairly randomly, to create surf.

Continue up onto the top of the cake, leaving space for the 6" cake to be placed in the centre.

 

Top Tier

Place the 6" cake onto a thin cake card and mask with frosting.

Colour white sugarpaste with soft caramel food colour to a sand shade. Cover the 6” top cake, neaten around the base and leave to dry.

Meanwhile, for the map, roll out the white modelling paste to a rectangle approx 3” to 3.5” deep and 18” long. There is no need to be too specific on measurement for this. Randomly snip along the edges with scissors (to give a tattered, worn look).

Dust ‘lake’ areas onto the map with blue dusting powder, then dust shades of the nude and nutmeg powders in various areas, adding concentrated colour around the cuts to emphasise.

Draw tracks over the map with the black pen, adding mountains, caves etc along the way. Think of some suitable ‘pirate’ place names and write these in as well.

Make some strong ‘gunge’ glue (sugarpaste mashed with water), and brush onto the back of the map. Fix around the side of the cake - it doesn’t have to be absolutely level, or meet at the back. Remember it is a very old map!

Add the sugar decorations onto the map. Dowel your base cake and place the map tier onto the centre of the bottom tier. (Use any leftover blue and white frosting to merge the two cakes)

Treasure Chest

A quick way to make a treasure chest for the top of the cake is to use bought krispie squares, but you can make your own krispie mix, or cut some cake pieces to size.

Using the squares, place one on top of another. Mould the third with your hands into the shape of the lid. Cover both chest and lid with chocolate sugarpaste. 

Add detail to the chest with gold modelling paste, rolled out and cut into strips. Also make a lock.

Fix the lid onto the chest propping it slightly open with a piece of sugarpaste. Place chest onto top of cake.

Make some pearl beads with the leftover white modelling paste and the bead mould, first dusting the mould with pearl shimmer powder colour. 

‘Fill’ the chest by arranging the beads and coins spilling out, and your choice of sprinkles and dragees.  

Top Tip: Chocolate coins are by far the easiest way of adding decoration to the chest, but they are not always available.  If you can make your own moulds, it is very simple to create the coins with gold paste. 

Supply List
Related Guides