This single-serve rice krispie treat you can make in the microwave is insanely easy to throw together and just as good as the ones you remember from childhood.
I have a few microwave recipes on the site (Broccoli in the Microwave, Green Beans in the Microwave, and Cauliflower in the Microwave) and judging by their popularity, you guys really seem to like them.
So I have another microwave recipe for you today, but this one’s a little more dangerous than broccoli, a Single-serve Rice Krispie Treat in the Microwave.
I apologize in advance if you find yourself making this way too often because it’s insanely easy to make and just as good as the ones you remember from childhood.
How to make a Single-serve Rice Krispie Treat in the Microwave
To start, you’ll need a microwave-safe bowl or over-sized mug.
This is not going to make a 12-ounce rice krispie treat, not even close, but your marshmallows are going to expand a lot when you microwave them, and you want room to stir in cereal.
So go big or clean up a mess later.
Put a third of a cup of marshmallows in the mug with about a half a tablespoon of butter (that’s 1 1/2 teaspoons or better, 7 grams if you have a kitchen scale) it doesn’t need to be exact. Just eyeball it and go light on the butter rather than heavy.
Then just microwave everything until the marshmallows puff way up, about 20 to 30 seconds. Stir until the marshmallows and butter form a mostly uniform goo at the bottom of your cup and then add your cereal and stir to coat.
If you like gooey rice krispies treats, you can eat it just like this, with a spoon.
OR scrape the cereal out onto a sheet of parchment paper and shape into a bar.
This is sticky work, so use a couple of butter knives to do the job or fold the edges of the parchment paper up to squeeze the cereal into a nice rectangle.
Then just let it sit until the marshmallows set (or for as long as you can stand it), maybe top with some festive sprinkles, and enjoy.
Rice Krispie Treat Recipe Notes
- This recipe will work for almost any kind of kiddie cereal. I *highly* recommend giving it a try with Fruit Loops.
- If you are craving a cereal bar but don’t usually keep cereal around the house, they sell single-serving containers of cereal at most grocery and convenience stores. You can get 2 to 3 bars out of them.
- Looking for more microwave desserts? Try 30-second Chocolate Sauce, Peanut Butter Sauce, and Nutella Sauce.
- This recipe scales easily and doubles or triples with no preparation changes needed.
Single-serve Rice Krispie Treat in the Microwave
Ingredients
Special Equipment
- Parchment paper optional
Rice Krispie Treat
- 1/3 cup mini marshmallows *
- 1/2 tablespoon butter
- 1/2 cup Rice Krispies cereal or any cereal you prefer
Instructions
- In an over-sized mug or microwave-safe bowl, combine marshmallows and butter. Microwave for 20 to 30 seconds, until marshmallows are puffed up and melty.
- Stir until marshmallows and butter are mixed. Add cereal and stir until completely coated.
- Enjoy warm out of the mug or scoop mixture out onto a piece of parchment paper. Shape cereal into a bar by folding up the edges of the paper or using two knives to squish the mixture into shape. Allow to set and enjoy.
Notes
This post may contain affiliate links, which means I receive a small commission if you make a purchase using them. There is absolutely no additional cost to you.
Pam says
sooo good! just perfect right out of the bowl. I put in 5 mini chocolate chips during the micro process… yum!
Tracy says
Loooove this idea!!
Michelle says
Rice krispie treats are one of those treats you think you don’t want until the whole tray is in front of you and you end up eating the whole darn thing lol….I started adding mini m & m’s to the top of mine for the children I have in my care long before it became a thing :)….the kids love them!…. I’m all for single serve recipes , ty 🙂
Tracy says
OMG Mini M&Ms sound like the way to go!!!
Corinne says
My sweet tooth and I thank you! Yummy 🙂
Tracy says
Lol so glad you both enjoyed it! 😉
Sara says
I was looking to use up some single-serve packages of rice crispies. I found your recipe and I made a few tweaks to use that size. I used 4 1/2 large marshmallows with the half tablespoon butter and a single-serve pack. They turned out wonderfully! Thank you very much!
Jennifer Warren says
I just made a batch of these (I doubled the recipe) with Fruity Pebbles, and they’re ahhhmazing! What a perfect way to satisfy a late night sweet tooth, without having to face the temptation of the rest of the pan in the morning. Thanks so much for the recipe!
Tracy says
I just saw your photo on Pinterest, and now I want to make this with Fruity Pebbles!! LOL. So glad you enjoyed the recipe!!
Linda says
Thanks Tracy. This is perfect for a small once in while treat for my grandkids whose mom (my daughter) doesn’t like them to have too much sugar.
Tracy says
I hope they enjoy it, Linda!!
Lane says
I got off work late tonight & was really in the mood for Rice Krispie Treats but didn’t have enough marshmallows or butter for a whole recipe. I found this, made it (I tripled the recipe to make enough for my kids to have tomorrow too) & they turned out perfect!
Thank you!!! My (mostly rare) sweet tooth is happy now & I know the kids will love them tomorrow too!
Tracy says
Yay! I’m so glad this worked out for you. Hope the kids enjoyed them too!
Emma Gentry says
About to charm my grandsons ( agges 6 and 8) with these. Thanks!
Tracy says
So fun!! Hope they enjoy them!
JoAnn C. says
I never really liked the rice cereal in the rice crispie’s treats. And about 100 years ago, when I was in college, I discovered I could use Captain Crunch Peanut Butter cereal instead. Today I use Cap’n Crunch Peanut Butter, (weird name change), or Reese’s Puffs with a drizzle of chocolate. Thanks, Tracy. Happy Thursday.
Tracy says
Those would both be so good in these! And love the idea of adding a drizzle of chocolate!