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Just Desserts

Knox Blox

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With hot summer days making it impossible to use an oven, I love cold refreshing treats that are easy with no baking necessary. My mom has made these a tradition since I was little. Unlike Jello Jigglers, Knox Blox are much firmer and easily transported. No fork or spoon required. Sugar free Jello can be substituted for an even lighter snack.

Ingredients

4 envelopes of Knox unflavored gelatin

3 pkgs (4 oz) flavored Jello gelatin

4 cups boiling water

Directions

Mix Jello and Knox gelatin into a bowl.

Add boiling water. Stir until dissolved.

Pour into 9×13 inch pan and refrigerate 4-5 hours or until firm.

Cut into squares or use cookie cutters for fun shapes!

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9 Comments

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Comments

  1. katklaw777 says

    July 16, 2010 at 10:55 am

    This brings back memories…….instead of water use fruit juice, it makes them a little healthier.
    Another trick is to add a 7UP type soda to make them fizzy.
    I will never forget the first time I had regular jello at a friends house. I was sure her Mom had messed it up. You see my Mom always made ours special by adding juice and a llittle soda pop, but I thought everyone made their jello that way.
    Nothing better then sticking your tongue through the jello and tasting the “fizz!”

    Reply
    • Emilie says

      July 16, 2010 at 11:40 am

      There are directions on the Knox package which does substitute juice for the water but then doesn’t use any Jello. I haven’t tried the 7 up version but that sounds yummy!

      Reply
  2. Paula says

    July 16, 2010 at 11:00 am

    Too fun! Sounds like a good summer treat! I’ll have to run out and get Knox. I have a ton of jello?

    Reply
  3. Dee says

    July 16, 2010 at 7:56 pm

    Those look like so much fun! I’ll have to give them a shot!

    Reply
  4. Tracy says

    January 15, 2023 at 12:17 pm

    My mom used to makes these when I had Swim Meets because they wouldn’t dissolve in the Florida heat when we ate them. I am almost 50 now and still makes these regularly, I use sugar free jello now because I am diabetic but these are still the best cold sweet treat ever!!

    Reply
  5. Darcy says

    March 20, 2024 at 11:56 am

    One can also use cookie cutters to make event themed shapes. Use the leftover pieces by placing them into a single serving bowl and top with whipped cream either for the event or just for the family.

    Reply
  6. Shirley says

    October 25, 2024 at 3:49 am

    Hi where can you buy the knox blox like in your picture?

    Reply
    • Emilie says

      October 25, 2024 at 7:42 am

      If you are in the US, it should be available in most grocery stores in the same aisle as the Jello. I know you can find it at Walmart and Target. Hope that helps! 🙂

      Reply

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