It was never my intention to develop a recipe for a peanut-butter chocolate Rice Krispies treat. Baked has an absolutely spectacular one, and although I have been known to tinker with a good thing (as ended up being the case here), I would never actively set out to do so. Instead, in this instance, I merely wanted to tweak and fiddle with my mother-in-law’s recipe for Oh Henry Bars — an oatmeal-based bar with a peanut butter chocolate topping that my husband snacked on incessantly growing up. But when I began researching Oh Henry Bars to investigate how my mother-in-law’s recipe might differ from those of others, I realized rather quickly that there are actually two kinds of said bars: the oatmeal-based one and the crispy rice cereal-based one.
And being a Rice Krispies Treat fanatic (very low-brow of me, yes), I knew I had to take a stab at the crispy rice cereal version. (Full disclosure: all research was web-based — my books are sadly lacking in the Oh Henry Bar department, which —duh — is what motivated me to develop a recipe for them in the first place). Now, although my perusal of the web led me to several different recipes for Oh Henry Bars with crispy rice cereal, really, they were all just versions of the scotcheroos from RiceKrispies.com.
And because I am not afraid to borrow techniques, ingredients, etc. from the website of a national brand of breakfast cereal (I’m not kidding about this lowbrow thing), I was all-over the particular method used to make the Rice Krispies Treat part of the scotcheroo: Rather than use melted marshmallows and butter, like in a traditional Rice Krispie Treat, or bring water, sugar and corn syrup to the softball stage, as is done in the Baked recipe, in the scotcheroo recipe, you merely boil sugar and corn syrup together, briefly, to basically the same effect, but in a quarter of the time (i.e., you create an absolutely dreamy, perfectly sweet, chewy, yet crispy Rice Krispie Treat in minutes — and boy, do I love a shortcut). Truth be told, I had an inkling that a shortcut existed, for when Smitten Kitchen posted the Baked recipe for peanut butter crispy bars, someone commented on the fact that bringing the sugar syrup to softball was unnecessary, in light of the scotcheroo technique. But I digress . . .
Long story short, this recipe is beyond simple and beyond delicious. Although the technique for making my Oh Henry Bars owes its provenance to the scotcheroo (I love writing “scotcheroo”), that’s all it owes. To the “treat” part of the bar, I added dark corn syrup, rather than light, for its molasses-y-ness. I also added butter, as is done in the Baked recipe, and vanilla and salt, two of my faves for amping up the salty peanut butter-y-ness of it all. For the topping, I decided on a chocolate peanut butter ganache with a sprinkling of Maldon sea salt — and not because I thought ganache and fancy salt would elevate my treat from its humble cereal box-website roots (like I said, I’ve no shame) but because it’s yummy. And i’m certain you will find it so, too.
Oh Henry Bars (The Rice Krispies Version)
Ingredients
- For the peanut butter Rice Krispies treat base:
- 4 1/2 cups Rice Krispies or any other puffed rice cereal
- 1/2 stick salted high fat butter (Or unsalted butter, plus 1/4 tsp salt)
- 3/4 cup creamy peanut butter
- 1 tsp pure vanilla extract
- 1/2 tsp kosher salt
- 1/2 cup granulated sugar
- 1/4 cup 2 Tbsp dark corn syrup
- For the milk chocolate peanut butter ganache topping:
- 1 cup milk chocolate chips
- 1/3 cup creamy peanut butter
- 2 Tbsp light corn syrup
- 1/2 cup heavy cream
Instructions
- To make the peanut butter Rice Krispies base:
- Grease a 13"x9"x1" pan with cooking spray, cover in parchment paper, and spray again. Set aside (alternatively, you can use a 13x9x2" pan). Place the Rice Krispies in a large mixing bowl and set aside.
- In a small microwave safe bowl, melt the butter and peanut butter in the microwave, checking on the mixture and whisking it with a fork or small whisk every 45 seconds. Once completely melted, add the vanilla and salt, whisk again, and set aside. (This can also be done on the stove.)
- In a small saucepan over medium heat, gently stir the sugar and dark corn syrup together, until the mixture boils. Stirring constantly, allow it to boil for about 20 seconds. Remove the mixture from the heat and immediately add the melted butter and peanut butter mixture. Working quickly, stir well with a rubber spatula, ensuring the butter and peanut butter are completely incorporated into the sugar syrup mixture.
- Once incorporated, pour the mixture over the Rice Krispies, scraping the sauce pan with a rubber spatula. Fold the mixture into the Rice Krispies until all of the cereal is evenly coated. Transfer the coated Krispies to the prepared baking pan. Place a piece of parchment paper over the Rice Krispies and press down (gently) on the paper with your hands, flattening the Rice Krispies, moving them into the corners of the pan, and ensuring that they are in a solid, even layer. Place the pan in the refrigerator to firm up.
- To make the milk chocolate peanut butter ganache:
- Place the chocolate, peanut butter, and corn syrup in a small heatproof bowl. Pour the cream into a small saucepan and heat it over medium to medium high heat on the stove top until bubbles form around the edges and just begin to form in the middle. Pour the warm cream over the chocolate and peanut butter and let the mixture sit for one minute. With a fork or small whisk, stir the mixture until the chocolate and peanut butter are completely melted. This may take more stirring than you'd think, but keep going until there are no more chunks of chocolate.
- Remove the pan of Rice Krispies treats from the fridge, and pour the ganache over them. Using a small offset spatula, spread the ganache smoothly and evenly. Return the pan to the fridge for at least an hour. When ready to serve the treats, sprinkle flaky sea salt over the ganache, and slice into whatever size treat suits your fancy. The treats will keep covered in saran wrap in the fridge for 3 to 5 days.

3 replies on “Oh Henry Bars (the crispy rice cereal version)”
So yummy. Reminds me of a desert my mom used to make. Thanks
So yummy. Reminds me of a desert my mom used to make. Thanks
So yummy. Reminds me of a desert my mom used to make. Thanks