Sidewalk Chalk – Chocolate Chalk Recipe

Learn how to make sidewalk chalk at home that looks like a chocolate bar. This DIY chalk recipe uses actual chocolate so why not also make it look like chocolate!

two chocolate sidewalk chalk pieces stacked on top of each other with the title 'chocolate chalk' on top
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For a fun summertime craft project, making homemade sidewalk chalk is a great option. It’s an activity to make it and then to use it. You can either use a custom DIY chocolate bar mold to make them look like actual bars of chocolate or shape them with a plastic bag or another mold.

Instead of using food coloring or other dyes for this DIY chalk, the recipe calls for chocolate. Therefore it specifically makes brown chalk and as an added bonus, scented chalk.

Note: Some links in this post may contain affiliate links, which means at no cost to you, I may earn a commission.

Table of Contents

What is Chalk Made of?

Fun fact, traditional chalk is a type of limestone or calcium carbonate, created from shells within the ocean. Since neither you nor I are the ocean we are therefore unable to make traditional chalk. However, we can make a variation of DIY chalk at home using Plaster of Paris , which is made up of calcium sulfate. This is also what Crayola uses in their sidewalk chalk.

Ingredients of Chalkboard Chalk vs Sidewalk Chalk

I personally thought chalkboard and sidewalk chalks were the same, but it turns out they’re made of different materials. According to Crayola they use different materials to make the different types of chalk.

Chalkboard Chalk is made of the natural calcium carbonate made by the ocean.

Sidewalk Chalk is made of Plaster of Paris, just like this chocolate chalk recipe.

They advise that the sidewalk chalk should not be used on chalkboard, however, since the Plaster of Paris is not as fine and can scratch a chalkboard.

top image is of two chocolate bars made of sidewalk chalk stacked on top of each other. the bottom image is a hand holding a small piece of chocolate chalk with hershey's imprinted on it with a jar in the background that says 'yum' written in on a chalkboard label. The title reads 'diy chocolate sidewalk chalk, abcrafty.com'

Materials to Make Sidewalk Chalk with Chocolate

Video Instructions - Chocolate Sidewalk Chalk

Step by Step Instructions to Make DIY Chocolate Sidewalk Chalk

Start by mixing together an overflowing 1/4 cup of Plaster of Paris and 1 cup of water in a disposable cup. (Note the mixture will start to bubble a little)

Tip: You want to use a disposable cup as the mixture will harden and it’ll be a pain to clean it.

pouring plaster of paris from a black measuring cup into a red solo cup
water mixed with plaster of paris in a red solo cup

Add around 1 tablespoon of cocoa powder to the mixture.

pouring cocoa powder from a spoon into a red solo cup

Mix it together with a popsicle stick until it forms a sort of chalk paste.

You may need to add more water or Plaster of Paris to get this “creamy” texture. I personally like to think it looks kind of like chocolate soft serve ice cream.

And if you want a darker color, add in more cocoa powder until the chalk paste is the color you would like.

popsicle stick mixing a thick brown chalk mixture with a popsicle stick in a cup

Get out your chocolate bar mold. I used the mold I made using a Hershey’s bar so it has the fun detailed text.

holding a rubber and silicone chocolate bar mold made from a hershey's chocolate bar

Use the popsicle stick to spread the chocolate chalk paste mixture into the mold.

Tip: Tap the mold onto the table to get out the air bubbles. It’s also a good idea when spreading the mixture into the mold to press down to the bottom of the mold. You want to make sure all the details from the mold show up!

spreading wet brown chalk mixture with a popsicle stick into a yellow silicone mold

Another option if you want to make more traditional sticks of chalk is to pour the mixture into a plastic bag and push it to the bottom.

Then roll the rest of the bag around it to hold its shape.

pushing thick brown chalk paste mixture to the end of a plastic ziplock bag
rolling a ziplock bag around a brown chalk paste mixture in the shape of a log in a plastic bag

Let them dry overnight and then very carefully remove them from the molds.

yellow silicone mold flipped over with one hand onto another hand

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holding a hershey's chocolate sidewalk chalk in one hand with another chalk in the background still in the mold

And I say very carefully remove them from the molds, because I quickly broke this one trying to take photos.

holding a broken chocolate bar chalk with one of the hershey bar segments broken off

But not a problem, I just used that piece to write with. And it’s frankly pretty cool that the pieces break off just like a real chocolate bar.

Using a piece of chocolate chalk to write 'yum' on a chalkboard label on a glass jar filled with hershey's miniature chocolate bars
holding a small piece of diy chocolate chalk with a glass jar in the background that has a chalkboard label with 'yum' written on it

But you can of course also use it as a full bar.

holding a diy sidewalk chalk in the shape of a chocolate bar

More Chocolate Crafts to Try

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top image is of two chocolate bars made of sidewalk chalk stacked on top of each other. the bottom image is a hand holding a small piece of chocolate chalk with hershey's imprinted on it with a jar in the background that says 'yum' written in on a chalkboard label. The title reads 'diy chocolate sidewalk chalk, abcrafty.com'

Chocolate Sidewalk Chalk

Learn how to make sidewalk chalk at home that looks like a chocolate bar. This DIY chalk recipe uses actual chocolate so why not also make it look like chocolate!
Yield 6 pieces of chalk
Project Time 5 mins
Total Time 5 mins

Materials
  

  • 1/4 Cup Plaster of Paris (overflowing 1/4 cup)
  • 1 Cup Water
  • 1-3 Tbs Cocoa Powder

Equipment

  • Disposable Cup
  • Chocolate Bar Mold
  • Popsicle Stick

Instructions
 

  • Mix together an overflowing 1/4 cup of Plaster of Paris and 1 cup of water in a disposable cup.
    pouring plaster of paris from a black measuring cup into a red solo cup
  • Add around 1 tablespoon of cocoa powder to the mixture.
    pouring cocoa powder from a spoon into a red solo cup
  • Add more water or Plaster of Paris until the mixture creates a chalk paste. You can also add more cocoa powder to get the color you would like.
    popsicle stick mixing a thick brown chalk mixture with a popsicle stick in a cup
  • Use the popsicle stick to spread the chocolate chalk paste mixture into the mold.
    spreading wet brown chalk mixture with a popsicle stick into a yellow silicone mold
  • Let them dry overnight and then very carefully remove them from the molds.
    holding a diy sidewalk chalk in the shape of a chocolate bar

Video

Notes

You can make your own mold with these instructions.
Keyword Chalk, Chocolate, Chocolate Bar, Plaster of Paris, Sidewalk Chalk

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