Surf's up! Whether it's summer or winter where your party is taking place, having a surfboard cake makes waves for your Guest of Honor! Here's how to make this amazing cake.
Turn the oven on so it can be warming to the temperature required as listed on the cake mix box. Following directions, grease and flour both cake pans (if required), add eggs, water and oil as directed by the cake mix directions, and fill both pans carefully. You'll have some cake batter left over, so either make cupcakes from it or pour it into another prepared cake pan and bake it after the two surfboard cakes are done.
Set both the 22.5 cm (9 inch) round cake and the 22.5 by 32.5 cm (9 by 13 inch) rectangular cake to cool, following directions on the box. Once they're both totally cool, carefully remove them from the pans. Using a knife, cut the 22.5 cm (9 inch) round cake in half, from 12 to 6 o'clock.
Put the rectangular cake on the clear plastic or cellophane side of the piece of cardboard. (You're using the blue cardboard to look like the ocean.) Pick up half of the 22.5 cm (9 inch) round cake and carefully fit its straight side to the straight end of the 22.5 by 32.5 cm (9 by 13 inch) rectangular cake.
Ice both cakes like they were one long cake using the spatula or the rounded-tip knife, and let your imagination decide whether you put stripes or swirls or big flowers on the "surfboard." Use 2 or 3 colours of icing to really make the colour scheme special.
Tint the white icing blue to match the blue of the "ocean" that's underneath the cake. Using the teaspoon, swirl the icing onto the plastic in a wave pattern. Make tiny "hills" and "valleys," and put a piece of shredded white coconut at the top of each "hill" to look like the tip of a wave. Put the entire cake into the refrigerator so the icing firms up before the party.
If you're making your own icing, be sure to add enough icing sugar so firm peaks form, or the "waves" of blue ocean will become flat puddles before you can get the iced cake into the fridge.