Peanut Butter Cup Rice Krispie Treats

Soooo….as you can see, this is not the big awesome exciting e-book we promised today!  We ran into a technical glitch in the eleventh hour (isn’t that always how it goes??) and since we want to make absolutely certain that you can all get the book and everything runs smoothly, we decided to work out the kink over the weekend so it’s just about ready!  I know you guys are excited about it, so hang with us, I promise it will be worth it!

(**Update: It’s HERE!**)
So to make up for it, I made you guys these (still friends?):

Peanut Butter Cup Rice Krispie Treats from Our Best Bites

If it’s not obvious from the photo- we’re using Cocoa Krispies here for extra chocolate-y goodness.  Any generic version works just fine!

Peanut Butter Cup Rice Krispie Treats

The standard mix is marshmallows and butter, but in this recipe I also add a big scoop of creamy peanut butter.  It creates this smooth peanut butter marshmallow goo that is sooo good.  But don’t try to stick your finger in there or lick the marshmallow spoon because you will scald both your finger and your face.  I will let you speculate whether or not I know this from experience.  I think we all know the answer to that.

Peanut Butter Cup Rice Krispie Treats

While the marshmallows are melting away on the stove top, grab the biggest bowl you have and load it up with the chocolate cereal, an extra cup of marshmallows, and a bunch of mini peanut butter cups, just for good measure.

Peanut Butter Cup Rice Krispie Treats

I buy these bags of mini’s in the candy aisle, but you could chop up any regular sized ones as well.

Peanut Butter Cup Rice Krispie Treats

When you pour the melted marshmallow stuff over this mix, the heat kind of softens and half-way melts the extra marshmallows and the peanut butter cups which is one of the best things about this recipe.

Peanut Butter Cup Rice Krispie Treats

You can see in the picture how they’re still in tact, but kind of smashed around and partially melted.  The best. 

Peanut Butter Cup Rice Krispie Treats

If you can wait until they’re cool, remove them from the pan and chop them up.  

Peanut Butter Cup Rice Krispie Treats

Or dig in totally warm like I did.  I won’t tell.

Peanut Butter Cup Rice Krispie Treats

I wrote the recipe so you can adjust from suuuuuper gooey to only normal gooey.  If you’ve made rice krispie treats (of course you have) everyone has that sweet spot with the perfect ratio.  So feel free to add anywhere in the range given.  These are guaranteed to increase the satisfaction of your weekend by 412% (scientifically speaking.)

Peanut Butter Cup Rice Krispie Treats

And pleeeease keep your eye out early next week for our big exciting book!  We really can’t wait for you all to see it so we’ll be working hard all weekend long to make sure it’s ready!

Peanut Butter Cup Rice Krispie Treats

Gooey peanut butter marshmallow is dumped over chocolate rice krispie cereal and studded with mini peanut butter cups. Hello. Doesn't get better than this.


  • 4 tablespoons butter
  • 9 cups mini marshmallows divided
  • 1/4 cup peanut butter
  • 5 cups cocoa krispies cereal *see note
  • 1 cup mini Reeses peanut butter cups or chopped full size ones


  • Line an 8x8 pan with a sling of parchment paper (or line with foil) and lightly rub sides of pan with butter.
  • Set aside 1 cup of marshmallows. In a large heavy-bottomed pot, melt butter. Add peanut butter and then the remaining 8 cups of marshmallows. Stir often until melted and smooth.
  • While marshmallows are melting, in a large bowl combine cereal, peanut butter cups, and remaining 1 cup marshmallows.
  • When marshmallow mixture is melted and smooth, pour over cereal mixture and stir to combine well.
  • Transfer mix to prepared pan and let rest until set.


  • These are very gooey and marshmallow-y because that's the ratio I like them at 🙂 You can add up to 6 cups of rice krispie cereal if you so desire. Play it by ear while you're mixing and feel free to adjust to taste.
Author: Our Best Bites
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Meet The Author

Sara Wells

Sara Wells co-founded Our Best Bites in 2008. She is the author of three Bestselling Cook Books, Best Bites: 150 Family Favorite RecipesSavoring the Seasons with Our Best Bites, and 400 Calories or Less from Our Best Bites. Sara’s work has been featured in many local and national news outlets and publications such as Parenting MagazineBetter Homes & GardensFine CookingThe Rachel Ray Show and the New York Times.

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Questions & Reviews

  1. What size bag of marshmallows do I need to buy or is 9 cups the equivalent of two bags? Just trying to be prepared here! Thanks, mwah!

    1. I buy generic brand and it depends on where you buy them because they are all different sizes. I would grab 2 bags to be sure!

  2. Awesome recipe and will definitely make it again and again. Try it and you will love it.

  3. Trying these out today for a get together! I use your recipes alllllll the time and trust you gals with a lot of your food choices. We do have similar tastes!

  4. Delicious!!! Made this for company tonight, but had to try them… I can’t stay out of them! Maybe I’ll make something else for company and eat ALL of these myself!

  5. I will try this recipe for a Star Wars movie theme episode in August for our church (Northstar). This will be made as one of the snacks amongst many others… Thank you