Peanut Butter S’mores Bars {No-Bake}

Every time I get an ultrasound the tech comments on how chubby my baby’s cheeks are. I had an ultrasound today at the perinatal and they told me that my baby girl weighs 6 pounds 10 ounces. Which I guess means that the other 17 pounds 6 ounces I’ve gained is accumulated cookie dough and these Peanut Butter S’mores Bars.

I only have 4 weeks left until baby comes and I’m in the nesting phase. I’m de-cluttering, cleaning, and preparing for the craziness that five kids will bring. I’ve been going through my boy stuff to donate and give away and the process has been so bittersweet. There will always be a special place in my heart for little boys but I’m excited to meet my chubby cheeked little girl.

Peanut Butter S'mores BarsI saw these over at Little Kitchen, Big Bites and knew I had to try them. The base tastes like the inside of a peanut butter cup. Then it’s smothered in marshmallow fluff, chocolate, and peanut butter cups.

They actually firm up quite nicely in the fridge but as you can see these had been out for a while and were nice and gooey.


Peanut Butter S'mores Bars
Prep Time
22 hrs 1 min
Cook Time
22 hrs 1 min
Author: Christy Denney
  • 1/2 cup butter melted
  • 2 cups graham cracker crumbs
  • 2 cups powdered sugar
  • cups peanut butter
  • 8-12 ounces marshmallow fluff
  • 1 1/2 cups semi-sweet chocolate chips
  • 2-3 cups mini peanut butter cups coarsely chopped
  1. Mix butter, graham cracker crumbs, powdered sugar, and peanut butter together until completely combined.
  2. Press into the bottom of a 9×13 baking dish.
  3. Spread a layer marshmallow fluff over the graham cracker crust. It's a little tricky but it will spread.
  4. Melt the chocolate chips in the microwave in 30 second increments stirring in between until melted. Pour over fluff layer and spread gently.
  5. Sprinkle peanut butter cups on top and press down gently.
  6. Refrigerate bars until set for 30-60 minutes.
  7. Cut into bars and serve. Store bars in the fridge. They will soften at room temperature.
Recipe Notes

Source: Little Kitchen, Big Bites

Speak Your Mind



  1. These look fantastic!! Congrats on your little baby girl!:)

  2. Wow…and Wow…If I could dream up a dessert, this would be it! Congrats on your new little one that will be coming soon:)

  3. These look so delish! I think I need to make these ASAP! :o) How exciting only 4 more weeks, my sister is due around the time with her first! Congrats!

  4. Yum! And congrats on the little girl coming soon! 🙂

  5. Hi Im from Australia and cant seem to find marshmallow fluff, anything I can substitute for this?

    These look amazing and my Ive got mad pregnancy cravings for anything sweet 🙂 I think they will be perfect!

    • Christy {The Girl Who Ate Everything} says:

      I think you could use regular marshmallows and maybe microwave them for 5-10 seconds to get them soft. That’s what I would do.

  6. These look AMAZING!!!! I am so going to give these a go! Thanks so much for sharing!

  7. Yup, these will be happening in my kitchen.

  8. Hokey Smokers this recipe is over the top! I am in this ice cream making phase…..thinking this would make a great ice cream flavor!

  9. Looks delicious!! And, congratulations on the new bundle that is arriving soon!

  10. I really need to get knocked up so I can through the nesting phase again. My house needs a good deep cleaning and I just don’t have the motivation right now. 😉

    These bars are AMAZING.

  11. These are a great indulgence for anyone!! Pregnant or not!! This is totally my kind of s’mores!

  12. These look amazing and so simple to make! Yum! And congrats on the little one! 🙂

  13. These are absolutely GORGEOUS!! And I can’t wait to see that sweet girl of yours!!

  14. Oh. Man. These look phenomenal!!

  15. I saw a s’mores display at the grocery store with Reeses, and I want wanted to try the combo ever since but haven’t been able too since I don’t have a grill. Will definitely be trying these bars though- the look soft, chewy, and wonderful!

  16. They look fantastic and I’m so excited for you, another little girl!!!

  17. I just went camping (well… glamping!) with my fam and these would have been perfect!

  18. Is marshmallow fluff Jet-Puffed Marshmallow crème?
    Congrats on another baby (girl!). I am a momma of twin BOYS and it doesn’t look like I’ll ever have a girl at my age. ENJOY the pinkness!

  19. These are the best things i have ever seen! and so simple!

  20. Just pinned! These look delicious. 🙂

  21. Okay so these were to die for. SO good. I reduced the icing sugar from 2 cups to 2/3 cup and still found it plenty sweet (and I take 4-5 sugars in my coffee). So I would highly recommend reducing the sugar to about 1/2 cup or 1/3 cup. 12 of us enjoyed them tonight and we all agreed that they were totally delicious. They were an all-around hit 🙂 Thanks for the wonderful recipe. I also logged in my reduced-sugar version of these onto if anyone wanted to enjoy these while counting calories. 🙂

    • PS I warmed my Marshmallow Fluff in the jar for about 20 seconds and it made it much easier to spread. 🙂

      • Thanks for the helpful tip! I made these tonight and I told my husband I wouldn’t make them again even if they are delicious for the mere fact of having to spread the fluff! Will try that next time!

  22. Celine Sanborn says:

    These were amazing!!!! The marshmallow fluff was a bit tricky but completely worth the effort! Will make again!

  23. These were so amazing! And I love a dessert that doesn’t require the oven. I’m in NC and our summers are muggy so a no-bake recipe is perfect this time of year. The marshmallow fluff was a little tricky to spread so I sprayed a butter knife with non-stick cooking spray and it really helped a lot. Next time I will also try heating it up like another reader suggested. Thanks for posting such delicious recipes Christy, I love reading your blog!

  24. These look so good! I am Australian so we don’t do smores… 🙁 but I think we definitely should it they are like these..

  25. I do think you can use regular marshmallows and perhaps microwave these intended for 5-10 just a few seconds to have these gentle. That’s precisely what I would do.
    Thanks, Lester

  26. I used mini marshmallows instead of marshmallow cream, and am having trouble keeping the layers from separating. Has anyone else encountered this problem? I put the marshmallows under the broiler for 30 sec. to toast and soften them slightly before sprinkling chocolate and peanut butter pieces on top. Thanks for any ideas!