super easy Recipes for Edible Slime

The Marshmallow vs. Jello Slime Test

By Kristy Esparza, July 25, 2020

Edible slime makes it safe for children of all ages to fully engage in slimy sensory play. Building a sensory focus into playtime helps children expand their awareness and understanding of how they make sense of the world. For many kids, playing with slime can also have a calming influence (think stress ball). 

With this in mind, I decided to turn a little lesson about the vocabulary of the five senses into a playful slime test. I tried out a few new recipes for edible slime, and then guided the boys through a sensory exploration of each one. Ratings and results below!

Jello Slime Recipe

Marshmallow Slime Recipe

Glow in the Dark Marshmallow Slime Recipe

JJ and The Bug’s Slime Time Sensory Test

JJ's Completed Milk Carton Bird Feeder in our slowly growing garden

What is Edible Slime?

Popular slime recipes often call for ingredients like glue, borax, or starch. While they can get you to the right texture, these ingredients are not ideal for sensory play with young children who enjoy exploring with taste as much as touch! Edible slime is safe for all ages, and some even aim to make it tasty. We did taste test these slime recipes as part of our experiment, but I don’t think the boys will be asking for a slime snack anytime soon!

Edible Slime Taste Test

Edible Jello Slime Recipe

  • 1 Cup Cornstarch
  • 1 Package of Jello
  • 1 Cup of Warm Water

This one’s as easy as they come! This mixture hardened quickly, so I had to keep kneading it and adding a bit more water until the boys were ready to play with it.

Original Recipe from Little Bins for Little Hands

Recipes for Edible Slime: Jello Slime Ingredients
Step 1

Mix cornstarch with Jello powder until fully combined. 

Step 2

Slowly add water. Stir after each 1/4 C is added until it becomes impossible to continue without adding more. You may not need a full cup to get to your desired consistency.

Step 3

Once all ingredients are combined, stretch and knead the slime, adding in 1 TBSP of water as needed until it can stretch out. 

NOTE

This slime dries into an almost putty-like  consistency. I had to repeat Step 3 a few times to keep it pliable for our slime test. 

Edible Marshmallow Slime Recipe

  • 7 Marshmallows
  • 1 TBSP Vegetable Oil
  • 1 TBSP Cornstarch
  • Food Coloring (Optional)

Another super simple recipe. I added some food coloring as a last minute addition so that each of our slimes was a different color.

Original Recipe from Messy Little Monster

Recipe for Edible Slime: Marshmallow Slime
Step 1

Coat marshmallows in cooking oil.

Step 2

Microwave marshmallows 10 seconds at a time up to 30 seconds. You’ll see marshmallows rise as they heat. Remove carefully. Marshmallows will be hot.

Step 3

Stir marshmallows and slowly add in cornstarch, continuing to stir as you go. Add as much as you need to get your marshmallow slime to your desired consistency.  

Step 4

I added in some green food coloring for fun when the slime was almost ready. Knead the mixture until fully combined. 

Edible Glow In the dark slime Recipe

  • 1 1/2 C Cornstarch
  • 1 C Marshmallows
  • 3/4 C Tonic Water
  • Blacklight

I added this one to our experiment because the boys love things that glow in the dark. Tonic water has quinine, which appears fluorescent under a blacklight. Honestly, I couldn’t get this one to glow like I thought it would, but I’m including it here because it had a different consistency than our other marshmallow slime.  

Original Recipe from the Soccer Mom Blog.

Recipes for Edible Slime: Glow in the Dark Slime
Recipes for Edible Slime: Glow in the Dark Slime Consistency
Step 1

Whisk together 1/2 C cornstarch with the tonic water until combined.

Step 2

Microwave marshmallows 10 seconds at a time up to 30 seconds. You’ll see marshmallows rise as they heat. Remove carefully. Marshmallows will be hot. Spoon marshmallows into bowl with the cornstarch and tonic water mixture.  

Step 3

Whisk the mixture until smooth. 

Step 4

Begin stirring in additional cornstarch bit by bit until you reach your desired consistency. The more you add, the less runny your slime will be.

Step 5

Plug in a blacklight for your slime party! 

NOTE

I recommend playing with this slime under the black light right away. By the time we moved inside, the boys had played with all 3 slime options quite a bit and we couldn’t get it to glow as I imagined it should. Still including it here, because I liked the way the tonic water changed the consistency from the stickier marshmallow option above!

JJ and the Bug’s Slime Sensory Test

After trying out our three recipes for edible slime, we moved on to testing. The main idea behind our slime experiment was to practice the five senses vocabulary in a fun and memorable way. We started out by making charts. As the boys named each of the senses, I wrote the words down the side of Bug’s chart. JJ wanted to make his own chart, so he drew a description of each of the five senses instead. 

Next, we went through the senses one by one, testing how each slime compared in terms of touch, smell, taste, sight, and sound. The boys each put a sticker to mark their favorite slime for each sense. They were wide-eyed and sure I was joking when we got to taste!  I had to make sure they knew that it was only ok to taste certain slimes when we made them at home. 

The Winners: Our Favorite Recipes for Edible Slime

JJ and the Bug's Favorite Edible Slime Recipes
  • Marshmallow Slime (1) 20% 20%
  • Glow in the Dark Marshmallow Slime (2) 10% 10%
  • Jello Slime (3) 50% 50%

Some notes on these results:

  • Bug’s favorite color is orange, so I think the visual of the orange Jello Slime largely colored his responses.
  • JJ scored the Marshmallow Slime highest, but thought the Jello Slime was best overall because touch was the most important category to him.
  • Ironically, I actually liked the Glow in the Dark slime consistency the best!  A good reminder to stop and see the world from their perspective as much as possible.

Then it was on to the best part…getting our hands dirty by playing and mixing them all up!

Do you have a favorite edible slime recipe? We’d love to hear your experiences and your children’s favorites. Share with us in the comments below.

Happy slime time!

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