Magic Pumpkin Science

This simple kids’ science experiment is a must-try this fall! Just grab a handful of Reese’s Pieces and a cup of hot water and you’re ready to make a jaw dropping magic pumpkin. Kids will beg to repeat the experiment over and over again.

Try it out and then hop over to grab 30 more easy-to-follow science experiments (plus a no prep science journal to keep track of their results!) in our shop!

Magic Pumpkin Science

Getting Ready

Prepping the activity couldn’t have been any easier!

I grabbed the bag of Reese’s Pieces I picked up at the store the day before and filled a measuring cup with hot tap water. Then I asked my kids to grab a white plate and join me.

That’s it! We were ready to jump in and get started.

Making Our Magic Pumpkin

The kids helped me arrange our Reese’s Pieces in the shape of a pumpkin on our plate.

We placed the orange candies in a circle to form the sides and used four brown candies to make the stem at the top.

playdough-to-plato-21 | Magic Pumpkin Science

Then we slowly poured some hot water on the outside edge of the pumpkin. We needed just enough to cover the bottom of the plate.

playdough-to-plato-22 | Magic Pumpkin Science

That’s when the REAL fun began! We sat back and watched the water work its magic.

The kids couldn’t wait to grab a fresh plate and try the experiment again!

The Science Behind It

The shell of the Reese Pieces are made with food coloring and sugar.

When the candies come in contact with the hot water, that sugar dissolves into the water and the colors spread across the plate, filling the pumpkin.

The activity is such a simple way to introduce states of matter to kids.


More Jaw-Dropping Science

Continue the fun with our mega pack of 30 must-try science experiments for kids! All of the activities use common household supplies like salt and baking soda. You won’t believe how easy they are to prep!

Our members get MORE!

Would you like 24/7 unlimited access to all of Playdough to Plato’s math and literacy centers, STEM challenges and digital games including hundreds of exclusive printables you can’t find anywhere else? Check out The Plato Pack!


  1. Karla Neumann

    Do you have to use reese’s pieces? My school is nut free and I have a student who has a peanut allergy. Will m&ms work too

    • Ashley

      Hi Karla,
      Yes! M&Ms will work too!
      We just used Reese’s pieces because it had more of the colors we needed.
      Hope you enjoy!
      Ashley // Happiness Ambassador



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Hi, I’m Malia.

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