JELL-O® 'Dive-on-In' Cake Recipe -
JELL-O(R) 'Dive-on-In' Cake Recipe
  • READY IN 4+ hrs

JELL-O® 'Dive-on-In' Cake

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"This cake decorated like a pool party will make a big splash at your next event."

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Original recipe makes 15 servings Change Servings

    4 hrs 15 mins


  1. Prepare and bake cake mix in 13x9-inch baking pan as directed on package. Cool completely. Invert cake onto large platter; remove pan. Using a serrated knife, cut and scoop out a shallow rectangle from center of cake, leaving a 2-inch border of cake on all sides and a thin layer of cake on the bottom. Reserve removed cake for snacking or other use.
  2. Stir boiling water into dry gelatin mix in large bowl at least 2 min. until completely dissolved. Stir in cold water. Refrigerate 1-1/4 hours or until slightly thickened (consistency of unbeaten egg whites). (Or, see Tip below for quicker set method.) Pour thickened gelatin into center of cake. Refrigerate 3 hours or until set.
  3. Frost borders of cake with whipped topping. Decorate with remaining ingredients as desired to resemble a swimming pool. Store leftover cake in refrigerator.
Kitchen-Friendly View


  • Fun Idea
  • Insert bite-size fish-shaped and octopus-shaped chewy fruit snacks into gelatin 'pool' before refrigerating for an added treat!
  • Shortcut
  • For a quick-set gelatin, simply add 4 cups ice cubes to the dissolved gelatin mixture in place of the 1 cup cold water; stir 8 min. or until gelatin begins to thicken (spoon drawn through leaves a definite impression). Remove any unmelted ice. Pour thickened gelatin into center of cake; continue as directed.

Reviews More Reviews

Mar 26, 2008

This makes such an adorable cake, and you can use any flavors you like for the cake & pool. I used a white cake and made a 2 layer rectangular cake. I placed the first layer on my platter, then placed the second cake layer on top of that. I then cut the rectangle for the 'water' out of only the top layer and filled it with the chilled blue Jell-O. This recipe is great for Summer birthday parties!

Sep 16, 2010

Living in south Louisiana, we thought it would be appropriate to make it a beach and add chocolate chips to the graham craker/brown sugar "sand" and call it 'Life's a beach and Then You Get Tarballs Cake". (See photo submitted today) The cake / jello combination was surprisingly delicious! We did add cream cheese to the whipped topping and some vanilla. Will definetly make again...need to use up all the 'decorations' anyway!


6 Ratings

Nov 28, 2007

It looked awesome, but the taste wasn't so great!

Feb 09, 2010

I had so much fun making this cake! I decided to make this an 'ocean cake' instead of a pool cake. I did the quick set with the jell-o and it worked great. I also used crushed graham crackers over brown colored "Special Buttercream Frosting" from this site to make it look like sand. I used tie-dyed fruit roll-ups as beach towels, cream wafer cookies as surf boards, drink umbrellas for beach umbrellas, teddy grahams as 'people', lifesaver and peach gummies for floaties, and I put gummy fish and octopus in the 'water' before it set! I also used some of the cake that I cut out for the water area to make sand dunes! The kids and adults alike thought this was the coolest cake!

Sep 10, 2010

Made this for my daughter about 5 years ago for her birthday pool party. She requested it again this year for her birthday.


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