Peanut Butter Crunch Bars (2024)

/ / Desserts

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Cap’n’s Peanut Butter Crunch Bars! My obsession with using cereal in desserts has returned. Cap’n Crunch has always been a favorite of mine, but I have never had the Peanut Butter Crunch before. This was just a quick recipe I whipped up before I ran off to the gym, because I had marshmallows I needed to use up! I bought the Peanut Butter Crunch not to eat as cereal for breakfast, but in an attempt to replicate a cookie one of my best friends had while she was in Maui. Aliesha was in Maui when she texted me to tell me about these amazing cookies she had while she was there….the Elvis Cookie and the Pumpkin Pie Cookie. Aliesha took a picture of the ingredient list for each cookie and sent it to me. The Elvis Cookie included Peanut Butter Crunch cereal. So a little kitchen experimentation coming soon as I try to replicate the Elvis Cookie. But— I only need a couple cups of the Peanut Butter Crunch cereal to make the cookies and I just can’t waste food, so I had to do something with the rest of the box of cereal. So cereal treats it was!

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O Captain! My Captain! (Walt Whitman shout out)

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James snuck in a picture of me pouring the yummy goodness into the pan!

Print Recipe

Serves: 24 Cooking Time: 5-minutes


  • 3 tablespoons butter
  • 3/4 cup creamy peanut butter
  • 1 10-ounce bag of marshmallows (or 6 cups of mini marshmallows)
  • 1 teaspoon vanilla extract
  • 6 cups Cap'n Crunch Peanut Butter Crunch Cereal
  • 2 cups semi-sweet chocolate chips, divided



Line a 9x13-inch baking dish with foil and spray with cooking spray. Set aside.


In a medium sized pot, put butter and peanut butter in the pot, and melt over medium heat on the stovetop. Stir. Once melted, add the marshmallows and continue stirring until completely melted. Remove from stove and immediately add vanilla extract and stir. Add the six cups of cereal, stirring in one cup at a time. Add 1-1/2 cups of the chocolate chips (reserve the other 1/2 cup of chocolate chips for the top) to the cereal mixture and stir to incorporate. The chocolate chips will melt to create perfect gooeyness.


Pour the cereal mixture into the prepared pan and gently spread to an even layer in the pan. Top with remaining chocolate chips.


Let set at room temperature and cut into desired sized squares.


Store at room temperature in an air tight container.

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Cap’n Crunch serving up something better than just plain cereal…duh!

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Oh yum!

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James snuck in another picture while I wasn’t looking…here’s a little behind-the-scenes picture of me trying to make these brown blobs of goodness look appetizing hehehehe 🙂 James was very happy to get the entire pan of these PB Crunch Bars to take into work. The guys started eating them as soon as James walked into work with them (he goes in at 0630 hours)…but I mean there’s cereal in these, so it can be considered breakfast, right?!?!

Leave me a comment if you make this…or just leave me a comment to say hi! Thanks for stopping by and reading!



PS— You can find me linked up to these Link Parties:What’s Cookin’ Wednesday andPeaches+Salt. Click the links to check out the fun!


BarsCerealChocolate ChipsDessertMarshmallowsPeanut Butter

November 28, 2016 By Kelly


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Peanut Butter Crunch Bars (8)

About Kelly

I am a self taught baker that enjoys baking from scratch and learning the science behind baking in order to create new recipes! I started this blog so I could share with you the yummy recipes I am making in my kitchen, but also to have some fun and laughs along the way!

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  • Peanut Butter Crunch Bars (12)



    November 28, 2016 at 1:45 PM

    Those look awesome, and easy! Win Win! I will try these for sure !! 🙂

    • Peanut Butter Crunch Bars (13)



      November 28, 2016 at 5:51 PM

      Thank you!! This recipe is seriously AMAZING!! After you make them, come back and tell me what you think!! XOXO

  • Peanut Butter Crunch Bars (14)


    Kim Lange

    November 29, 2016 at 10:31 AM

    Seriously, I love this recipe! I could eat the whole dang pan Kelly!!!

    • Peanut Butter Crunch Bars (15)



      November 30, 2016 at 1:44 PM

      Hahaha I know right?! I quickly gave these away right after I made them to prevent that from happening hehehehe 😉 XOXO

  • Peanut Butter Crunch Bars (16)


    Julie Evink

    November 29, 2016 at 6:59 PM

    Anything with Peanut Butter and Chocolate is a win in my book!

    • Peanut Butter Crunch Bars (17)



      November 30, 2016 at 1:45 PM

      Hi Julie! I can’t think of a better combo! Love your blog too btw! XOXO

  • Peanut Butter Crunch Bars (18)



    November 29, 2016 at 8:09 PM

    I was able to steal one when visiting James at the station- so seriously yummy- crunchy and creamy with pb and chocolate melted together- a perfect treat!! 😍

    • Peanut Butter Crunch Bars (19)



      November 30, 2016 at 1:48 PM

      Yay!! Glad you got to steal one! I think this recipe will be one of those ones James asks for on the reg! 🙂 XOXO

  • Peanut Butter Crunch Bars (20)



    September 22, 2020 at 12:58 PM

    Cut the recipe in half since my husband I are empty nesters. My college children left a box of Captain Peanut Butter Crunch at home. The recipe turned out great. Thanks for sharing.

    • Peanut Butter Crunch Bars (21)



      September 24, 2020 at 12:20 PM

      Yay!! Thank you so much for making this and I am so glad you liked it 🙂 XOXO

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