The Knox Blox I Remember

Total Time
4hrs 5mins
Prep 5 mins
Cook 4 hrs

My family was outraged when I recently banned premade Jello cups from our house. Enough already with the new convenient society, how hard is it to make Jello? To appease the rioting horde, I promised them I would make the best Jello they'd ever had, Jello they could pick up, the Knox Box I used to eat when I was a kid. Finding the super simple recipe was harder than I thought it would be, but I looked and looked and this is what I remember from my childhood. (The new Jello Jigglers don't cut it for me; they taste too much like gummy bears.) I'm surprised this isn't already on Zaar, but now it is!

Ingredients Nutrition


  1. Put Jello and Knox gelatin into a bowl. Add water and stir until dissolved.
  2. Pour into 9x13 inch pan. Cool in refrigerator.
  3. When firm, (4 to 5 hours) cut into squares. I've used the chill time as the cook time.


Most Helpful

I have the actual well worn recipe and it is a bit different as they use 4 Knox gelatin packets to 3 jello packets with 4 cups of boiling water poured into a 8 or 9 inch pan. I think we liked them thinner so put it in a 9X13 pan.

eilee2 February 23, 2013

Thank you so much for sharing this recipe, I loved Knox blocks as a kid! I made these today and used the jello Christmas mold and with the remaining mixture I put it in a 8x8 pan. I also used sugar free jello. I will try the four packets of gelatin next time and see if it makes much of a difference.

Johnsdeere December 22, 2015

I too, used to make this recipe and like everyone else, It is so much better than the jigglers of today. I used to make these for my kid's school parties. They were a huge hit. None was ever left. In place of water, I would use fruit juice - it made them just a little healthier. I would then use small cookie cutters for different shapes. Because of the uneven shapes, there would be a lot of leftover waste. I would melt the leftover jello down and allow it to set again (in a smaller pan) and I would be able to make more. I would keep repeating this until it was gone. No waste.

drlnkrncrnt78 July 10, 2014

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