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Make this hot tub cake and live vicariously through your kids’ dolls

After a fun-filled wintry day of playing in the snow, it’s time for a relaxing soak in a hot tub. Don’t have one? Make one of your own using cake and Kit Kat bars. True, you won’t fit into it — but your kids’ dolls will.

Here’s how to create this humdinger. Don’t worry — it couldn’t be simpler and you can totally pull it off.

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Hot tub cake recipe


  • 1 (15.25 ounce) box yellow cake mix
  • 1/3 cup vegetable oil
  • 3 large eggs
  • 9 Kit Kat candy bars broken into 36 segments
  • 2 (16 ounce) containers blue frosting (or vanilla frosting tinted with blue food coloring)
  • 20 inches black ribbon
  • 3 Barbie dolls, legs removed


Bake two round cakes following the directions on the box. Once the cakes have been baked and cooled, you can start assembling.

1. Place a dollop of frosting on your base, which can be a cake board or a cake stand.

hot tub cake cake board
Image: Tiffany Egbert/SheKnows

2. Place the first layer of cake on the base and frost the top.

hot tub cake frost layer
Image: Tiffany Egbert/SheKnows

3. Place the second layer of cake on top of the frosted layer.

hot tub cake layers
Image: Tiffany Egbert/SheKnows

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4. Frost the sides, making sure that there is enough frosting to hold the Kit Kats in place but not so much that it squishes out when the candies are placed.

hot tub cake frost sides
Image: Tiffany Egbert/SheKnows

5. Place the Kit Kat bar segments around the cake vertically (like you’re building a fence).

hot tub cake kit kats
Image: Tiffany Egbert/SheKnows

6. Tie a ribbon around the Kit Kats to help keep them in place.

hot tub cake ribbon
Image: Tiffany Egbert/SheKnows

7. Using a piping bag, pipe frosting over the top of the cake.

hot tub cake pipe
Image: Tiffany Egbert/SheKnows

7. Using an offset spatula, spread the frosting roughly so it resembles water.

hot tub cake frost top
Image: Tiffany Egbert/SheKnows

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8. After removing the legs from the dolls, press them into the cake, taking care not to place them too close to the edge of the cake.

hot tub cake barbie
Image: Tiffany Egbert/SheKnows

9. Use the offset spatula to fix the frosting around the dolls.

hot tub cake final
Image: Tiffany Egbert/SheKnows

Watch the video to learn more about this cake.

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