We love Halloween in our house. If you feel the same, you’re going to love making these monster Rice Krispie Treats.

How to Make Monster Rice Krispie Treats
These treats were so much fun to make! After we made our Sesame Street Rice Krispie Treats, we realized how much fun we could actually have, making character treats.
We started playing around with the decorative candy eyeballs and some red and black decorating gel. We really just let our imaginations run wild. You can follow our guidelines, but you’ll really have more fun if you just let your imagination run wild too.
This recipe will work with any color Rice Krispie Treats. We used our Blue, Yellow, Red, and Green Rice Krispie Treat recipes.
So the first thing you want to do is figure out what colors you want to make your Rice Krispie monsters.
Step One
After you figured out what colors you want to use, it’s time to get started. Pull out your large stock pot, add in your butter, and set your heat to medium. Give the butter a few minutes to melt and move on to the next step.
Take a full 16 ounce bag of Jet Puff Marshmallows and dump them into the melted butter. You can use your spatula to stir the marshmallows around until they melt as well. You should have a pot full of white melted marshmallows with a golden, butter colored sheen.
If you want to speed this part of the process up a little bit, you can always follow the instructions for our microwave Rice Krispie Treat. Take the first of your food coloring and squirt it into the marshmallow mix. For this example, we will be using four colors and we will start with blue.
Continue to stir food coloring into the marshmallows until everything is a bright blue color. You can add more food coloring if you need to.
Once your marshmallows are the desired color. Turn your heat down to low or medium low. We do this to avoid overheating the marshmallows. Overheated marshmallows can become brittle and very difficult to stir.

Step Two
Take out your box of Rice Krispies cereal. Dump the 6 measured cups into the blue marshmallows. Use your spatula and stir everything together until evenly coated.
Sometimes the Rice Krispies won’t stay as bright and colorful as the marshmallows. If this happens, you can just add more food coloring.
Step Three
We’re making a full batch, so we will use a 9 x 13 baking pan. Using canola oil or your favorite flavorless baking spray, coat the bottom and inside walls of the baking pan.
Scoop the unformed Rice Krispie Treat mix from the pot and into the pan. Use your spatula to spread the mix evenly throughout the pan until it is completely flat along the bottom.
Set to the side and allow to cool. You will want to repeat these steps as many times as you have colors picked out. Once you have all of your colors made, move on to the next step.
Step Four
Now that your Rice Krispie Treats are completely cool, it is time to cut them. Again, this is somewhere where you can use your own creativity, but we used rectangle shapes instead of squares.
Using a sharp knife, cut your squares into 2 x 1 or 4 x 2 rectangles. Continue to do this until you have all of your colors cut.
Step Five
Now it’s time to move on to the fun part; DECORATING!
Blue
Again, we’ll start with blue. We decided to go simple with this one and simply gave him three eyeballs right in the center and finished him off with a black circle for a mouth.

Yellow
Our Yellow Monster has just two eyes and we gave him a red gel squiggly mouth.

Red
Our Red Monster is a little more complicated, but not too much. We gave him three eyeballs stacked vertically in a crooked pattern. And for his mouth we just gave him a big goofy grin using black decorative gel.

Green
Our final monster may be the most complicated of them all. But again, he is still pretty simple to make. We gave him one single eyeball right in the center of his face. And for his mouth we gave him a really wide frown in black gel and two red gel fangs.

And that’s all you need to do! Make sure you have fun with this recipe and design your own monsters. You can let us know how they went in the comments below or you can post your pictures of them to Instagram and tag us.

Monster Rice Krispie Treats
Equipment
- 9×13 Pan
- Spatula
- Large mixing bowl or Large stock pot
- measuring cups
Ingredients
- 6 Cups Rice Krispies
- 6 Tbsp Salted Butter
- 16 oz Marshmallows
- 1 pack candy eyes
- red food coloring
- yellow food coloring
- green food coloring
- blue food coloring
- tube black decorating gel
- tube red decorating gel
Instructions
- Add the 1.5 butter & marshmallows in a bowl and melt them together. This can be done in the microwave or on the stove top.
- add in your food coloring
- add in Rice Krispies and mix thoroughly
- repeat steps 1 – 3 for remaining colors
- Spread the mixture into a greased pan with a greased spatula.
- Allow mixture to cool (about 30 minutes), cut into squares
- decorate with candy eyes, black decorating gel, red decorating gel
- Serve and enjoy!