How to Make Original Finger Gelatin (Knox Blox)

Reviewed by Ashley Crawford

Last Updated: March 1, 2026 Approved

Are you looking for a wiggly snack that tastes slithery but delicious? Although these concocted snacks used to be called Knox Blox up until a few years ago, you can make these wiggly snacks after following the directions in this article.

Ingredients

Yield: 12 squares
3 pkg Jello brand Gelatin (any flavor)
4 envelopes Knox Unflavored Gelatine
4 cups boiling water

Steps

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Packets may be of any taste you want, as long as they are all the same.

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^{[4]
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Cut the refrigerated gelatin into bite-size or finger foods you can serve to anyone in your household.^{[5]
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Question

Can I use apple juice instead of water?

Community Answer

Water is a key ingredient in Knox Blox, as it hardens to the right consistency.

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How many grams does a box of Knox gelatin yield?

Community Answer

An 8 oz box of 32 envelopes that has 0.25 oz per envelope is about 7 grams per envelope. So if you had a box of 32 envelopes, you would have about 224 grams. Just multiply the amount of envelopes by 7.

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Question

Can I cut the shapes the night before and if so, can I just stack them on top of each other in some Tupperware? I need to take 28 pieces to school tomorrow for my son and not sure how to transport.

Community Answer

Yes. Place something in between each layer so that they do not stick together. Plastic wrap, parchment paper, wax paper, etc. should work.

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Tips

"Knox Blox", as these were originally called, are traditionally served as cut square pieces. However, if extra "dough" is not important to you, you may cut these out with a cookie cutter, to create assorted fun shapes (which are super-fun ideas for kids' birthday parties).

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