How to Decorate a Swimming Pool Cake

Updated March 23, 2017

Anyone who loves to swim will be thrilled to dive right into a pool cake! Using two round cakes and blue gelatin to create a realistic pool, you may then take off with your own ideas to make your pool cake as personal as possible for your recipient. Run wild with underwater themes, tropical touches or fishy friends to create a thoughtful pool cake for the lucky recipient.

Tint one 454gr tub of frosting blue with your food colouring. Start with three drops and add more for increased vibrancy. Cover the unfrozen cake with the tinted frosting. Place the frozen cake on top of the frosted cake with the trimmed side facing down.

Cut the shape of your pool about 3/4 of an inch deep into the top of the cake. Leave at least 1 inch of room around the edge. Choose to use a square, rectangle, crescent or round shape for your pool.

Cover the top layer of the cake in the blue-tinted frosting, making the sides blend together seamlessly.

Put both boxes of gelatin mix in a bowl and use only 2 cups of boiling water to prepare it. Place the bowl containing the gelatin into a bowl of ice cubes and water. Stir the gelatin until it begins to thicken, then pour the gelatin into the pool area of the cake. Place the entire cake in the refrigerator for two hours.

Tint 1/4 cup of frosting green and use your grass frosting tip to create a lawn around the pool area. Adorn your cake with any decorations appropriate to your cake recipient. Ideas include a toy water slide, animal crackers and fish shaped crackers.

Things You'll Need

  • Two 8-inch round cakes, tops trimmed to flat (freeze one)
  • Two packages blue gelatin
  • One medium bowl
  • One large bowl
  • Whisk
  • Food colouring
  • Ice cubes
  • Water
  • Two 454gr tubs white frosting
  • Frosting knife
  • Grass frosting tip
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About the Author

Joy Uyeno has been writing about travel, food, fashion, culture and finance since 2005. For three years she wrote a column for the "Honolulu Star-Bulletin" aimed at young and first-time travelers. Her writing has appeared in several local and national publications, including the 2008 anthology "Honolulu Stories." She holds a Master of Arts in writing and publishing from Emerson College.