Want to know how to make edible slime with marshmallows? Here is a fun edible slime recipe that’s OK if a nibble happens! Have kids who will forever taste things or are too young to know not to taste everything. Grab some marshmallows, oil and cornstarch and make this fun marshmallow slime that also doubles as a cool putty idea! Homemade slime is what we love to play with here!
How To Make Edible Slime With Marshmallows
Note: While this is considered an edible slime, it is not meant to be a food source. I am pretty sure this isn’t the healthiest thing to consume. However we are talking about safety, so this edible slime is perfectly fine if a little is consumed.
Watch The Video:
Ingredients:
- 6 Jumbo Marshmallows {make a jumbo marshmallow catapult too!}
- 1 TBL Cooking Oil
- 1/2- 1 TBL Cornstarch Powder
CLICK HERE TO MAKE>>> Marshmallow Slime without cornstarch
Instructions:
Note: Adult supervision and assistance highly recommended. The marshmallows will get very HOT in the microwave. Always make sure the materials are cool enough to handle!
STEP 1: Put 6 marshmallows in a microwave safe bowl and pour 1 TBL of oil into the bowl.
STEP 2: Microwave on high for 30 secs. We have a 1200 watt microwave oven so your time may vary slightly.
STEP 3: Add 1/2 tablespoon of cornstarch to the heated marshmallows and mix. We used jumbo marshmallows!
STEP 4: This mixture will be HOT so please be very careful! Eventually, as it cools, you are going to want to start kneading it and playing with it.
You may want to mix in another 1/2 tablespoon of cornstarch to thicken a little more. The more cornstarch you add, the stiffer it will get and be more like a putty!
The cornstarch will help the marshmallow thicken and form a slime like substance. Time to play with your marshmallow slime! How much of a stretch can you get?
What happens when you heat a marshmallow?
This edible slime recipe even has a little science to it because of the marshmallows! Have you ever noticed what happens when you put marshmallows in the microwave? They get big and puffy {before they burn if you let them go too long}!
When you heat up a marshmallow, you heat up the molecules in the water that is contained within the marshmallow. These molecules move farther apart. This gives us the squishiness that we are looking for to mix up your Rice Krispy squares or our marshmallow slime!
The added oil does assist in the pliability and general non drying of the material.
When you add the cornstarch, a natural thickener, you make a thick stretchy substance which is known as the great marshmallow slime! Your hands playing, kneading, stretching, and generally having fun with the slime putty keeps it going.
After a while, as the slime cools down, it’s going to harden. This is because the molecules in the water move closer together again.
So, unfortunately, this slime is not going to last all day or even overnight. Yes, we put ours in a plastic bin to see. Our traditional non-edible slime recipes do last a lot longer!
More Fun Things To Do With Marshmallows
Have leftover marshmallows? Why not try one of these fun activities!
- Make the tallest tower you can with spaghetti and marshmallows.
- Build structures with toothpicks and marshmallows.
- Make a marshmallow igloo.
- Construct a solar oven and cook some s’mores.
- Build a marshmallow catapult and fling marshmallows.
- Or of course, grab all the pink marshmallows and make strawberry marshmallow slime.
Free Printable Slime Recipe!
More Fun Edible Slime You Can Make
Check out over 12 edible slime recipes you can make! Including…
Grab the Ultimate Slime Recipe Bundle
All the best homemade slime recipes in one place with plenty of fantastic extras!
What’s Included:
- The Ultimate Slime Guide contains all the specialty recipes you or your kids want to make! You’ll find all the best tips, tricks, hints, and slime-y info in almost 100 pages!
- The Ultimate Slime Holiday Guide covers all the best holidays and seasons with special themes and slime-y projects!
- The Ultimate Borax-FREE and Taste-Safe Slime Guide shows you how to make all the best borax-free, taste-safe, and non-toxic slimes kids love, such as marshmallow slime. These recipes do not use chemical activators such as saline solution, liquid starch, or borax powder, making them truly borax-free.
- The Ultimate Slime Coloring Book is an easy-to-print coloring book kids will love! Color and design your favorite slimes!
- The Slime Starter Guide is a fact-filled information guide with everything you need to know to make the best slime ever!
- Slime Science Project Pack helps you turn slime-making into a science lesson!
Have you used any other thickening agents other than corn starch? I would love to do this with my class but I have a student highly allergic to corn so that rules out corn starch.
I had a tough time getting the slime off my hands. After kneading, it was stretchy and pliable like you said, but I couldn’t get it off my hands without finally running them under water. Any suggestions?
You can add a little cooking oil to your hands. Once you make the slime and the ingredients come together finally. You may want to wash hands once after you initially knead the marshmallow mixture just to remove the residue and then add a little oil to your fingers and palms. This is an alternative slime recipe so you won’t really get that rubbery slime feel, but its great when you can’t use those other ingredients or don’t want to!
Powdered sugar is often used in conjunction with cornstarch but I am not sure if it will do the job thickening it on its own. So glad you recognize the allergy though!
🙂
Can you use powdered sugar instead of cornstarch?
Yes you can!
Use powder suger instead of corn starch
I love this slime I really love it (it did work)
OMG, what a great idea! Definitely need to show this to my daughter.
cool
cool
Is there a way to make this wihout a microwave?
Hi, you could try our no-cook fluff version instead!