Peanut Butter Krispies Layered Brownies

Dark Chocolate Brownies layered with mini Rolos and Peanut Butter Krispies. Thanks to Cook’s Illustrated for the delicious recipe for the brownie base!

Rich, fudgy chocolate brownies topped with Rolos and peanut butter krispie topping!

Click HERE to save this recipe to Pinterest!

I’m often asked, where do I get my inspiration for recipes? Seriously, I can’t even pin point. They come to me in dreams! I wake up and scribble notes at my bedside.

I keep a list on my phone as I’m walking through a grocery store and an idea may pop into my head.

I go to retreats and hear Chef’s talk about products and techniques and stick post it notes all over my computer!

I read dozens of blogs every day.

I subscribe to and read half a dozen food magazines and I have a bookshelf overflowing with cookbooks.

I have spent a lot of money on those cookbooks through the years, only to be sorely disappointed. Some of them are filled with food I would never dream of making, or techniques that are vaguely explained.

Bake the perfect brownies!

When America’s Test Kitchen reached out to me and asked if I wanted to review the Cook’s Illustrated Baking Book cookbook, I actually jumped at the chance! I have so many friends and family who LOVE their work. And how they explain the what and the why behind using certain ingredients is eye opening!


This Baking Book is no different! I am in love with all of the detail put into this book. Seriously, you guys, I kinda feel embarrassed encouraging you to buy this book. You won’t ever have to stop by my blog anymore, all the recipes you’ve dreamed of making are in The Baking Book.

However, I had to find a way to remind you all why I exist.

In my ever loving quest to find the perfect brownie recipe (hey, you can never have too many perfect brownie recipes) I decided to give The Baking Book a try. I am pretty picky when it comes to brownies. I don’t like those dried out blocks of chocolate brownies you see in the bakery. I like a gooey, fudgy, undercooked dark chocolate brownie. Any one else?

Today’s recipe is the “Chewy Brownies” from page 236. Here are some of the fun tips they tell you about these brownies:

How to make perfect brownies:

  • for extra chew, add extra yolks
  • balance the saturated fat of butter with unsaturated vegetable oil
  • bloom the cocoa powder
  • for chewiest texture, let brownies cool thoroughly before cutting
  • use high quality chocolate for best flavor (that’s important in all my recipes!!)

To make this recipe even better, I added some Rolo minis on top. And that layer or krispies? It’s a peanut butter, chocolate, crispy rice cereal mixture that is amazing!

Rich, fudgy chocolate brownies topped with Rolos and peanut butter krispie topping!

So yes, get a copy of this book for yourself. I highly recommend it! The cookbook is filled with over 450 recipes! 450! But then, be sure to stop by my blog to see my twist and tricks on those recipes, ha!!

Love Brownies? I happen to have a few favorite recipes….


Previously, my favorite Dark Chocolate Brownie recipe!

milky way brownies

Milky Way Double Fudge Brownies 


Peanut Butter Brookies: when cookies meet brownies!

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Peanut Butter Krispies Brownies recipe:

Yield: 24 brownies

Peanut Butter Krispies Layered Brownies

Prep Time 3 hours
Cook Time 35 minutes

Dark Chocolate Brownies layered with mini Rolos and Peanut Butter Krispies. Thanks to Cook's Illustrated for the delicious recipe for the brownie base!


For the Brownies:

  • 1/3 cup dutch processed cocoa powder
  • 1/2 cup plus 2 Tbsp boiling water
  • 2 oz unsweetened chocolate, chopped fine
  • 1/2 cup plus 2 Tbsp vegetable oil
  • 4 Tbsp unsalted butter, melted
  • 2 large eggs plus 2 large yolks
  • 2 tsp vanilla extract
  • 2 1/2 cup granulated sugar
  • 1 3/4 cup all-purpose flour
  • 3/4 tsp salt

For the topping:

  • 12 oz mini Rolos (or equivalent in regular sized)
  • 1 1/4 cup creamy peanut butter
  • 3 Tbsp unsalted butter
  • 11.5oz bag milk chocolate morsels
  • 2 cup crispy rice cereal


  1. Line a 13x9 baking sheet with parchment paper. Preheat oven to 350 degrees.
  2. In a large mixing bowl, combine cocoa powder with boiling water. Whisk until smooth. Add unsweetened chocolate and continue to whisk until melted. Add oil and melted butter, mixture may appear curdled. Add eggs, vanilla and sugar, whisking until fully combined.
  3. Using a rubber spatula, fold in flour and salt just until combined.
  4. Pour batter into prepared pan, spreading into the corners of the pan. Bake for 30 minutes. Top with rolos in a single layer and return to oven for 3-5 minutes. Using a spatula, smooth melted Rolos over the top. Place on wire rack to begin cooling.
  5. In a medium saucepan, combine peanut butter, butter and milk chocolate. Heat over low and stir constantly until mixture is smooth. Fold in cereal. Spread over warm brownies and allow to cool completely.
  6. Once brownies have cooled, cover with foil and refrigerate for 2-4 hours (or overnight), allowing the top layer to harden. Cut into squares and enjoy!


**I use 1 1/2 bags (8oz each) stand-up packages of unwrapped mini Rolos. Feel free to use whatever candy you have on hand! **recipe adapted from Cook's Illustrated Baking Book 2013

Did you make this recipe?

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Rich, fudgy chocolate brownies topped with Rolos and peanut butter krispie topping!

Today’s recipe for Peanut Butter Krispies layered Brownies was originally published on Shugary Sweets on October 14, 2013 and has been republished in September 2018.

**I was provided a copy of the book, Cook’s Illustrated Baking Book. No other compensation was received. All opinions expressed are, as always, 100% my own!

About Aimee

Aimee is a dessert lover (specifically rice krispie treats), workout enthusiast, self-taught foodie, and recipe creator.

Learn more about Aimee.

Affiliate Disclosure:**There may be affiliate links in this post! By clicking on them, or purchasing recommended items I may receive a small compensation. However, I only recommend products I love! Thank you for supporting Shugary Sweets! See my disclosure policy for more info**

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Posted on September 9, 2018

Comments & Reviews

  1. PLEASE, PLEASE,PLEASE remove me from your emailing list.

    I have been begging for a month to be removed from your list.

    I do NOT bake or cook. I do NOT want your emails.

    I do not see an unsubscribe button on your site.

  2. I’m so with you! I’ve bought cookbooks before with insane ingredients and techniques and that’s such a bummer! I have an earlier version of this cookbook, The Family Baking Book, that I LOVE. Excited to see the updates here!

  3. Curious if I were to make this recipe 1.5 times – to make a small pan of them to keep at home, because I know that they will be devoured! 🙂 How long should I cook the brownies…I would be making a 13×9 pan and then like a 8×8…Thank you! 🙂

  4. I have just made these. They look divine. Can’t wait for them to cool so I can try them. Will let you know when I do 🙂

  5. This recipe was so exceptional, I had to leave a comment. We ate it for days, tiny slice by tiny slice. I thought about it in the car on my way home, knowing it was sitting on the counter waiting for me. Absolutely sensational.

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