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BOO! Chocolate Peanut Butter Bars. You don’t need to be a professional baker to make these deliciously easy homemade Halloween treats. These spooky bars require no oven time, just 7 ingredients, are made without processed sugar, and take almost no effort to make. They’re fun to make no matter your age and you really can’t mess them up!

BOO! Chocolate Peanut Butter Bars |

BOO! I’m so excited! I just love these bars! I make these fun, easy peanut butter bars almost every October. We really love them – both their deliciousness and just how fun and easy they are to create.

This is one of those years where I’m really leaning into the fun Halloween recipes. For whatever reason, there are years when I don’t share as many spooky-themed recipes. But this year, I’m loving every minute. It’s an excuse to have fun and just let the kid in me shine. I think we all need to allow the kid in us to shine a little more these days!

BOO! Chocolate Peanut Butter Bars |

Here are the details

As mentioned, these are made using 7 ingredients, so they’re pretty darn easy. In fact, they’re very similar to my mom’s special K-bar recipe, just made in a fun way for Halloween.

You’ll need honey, maple syrup, creamy peanut butter (I prefer to use organic, no sugar added), chocolate, and white chocolate. That’s it, and no added sugar aside from what’s in the chocolate.

BOO! Chocolate Peanut Butter Bars |

To begin with, grab some corn flakes and brown rice krispies. I love the texture, crunch, and chew of these cereals together. Add the corn flakes and brown rice krispies to a bowl along with the creamy peanut butter.

Boil the honey and maple together. I use honey and maple syrup together for added flavor and the best texture. Boil the mix for 2 minutes, then pour it over the bowl full of cereal and peanut butter. Mix everything together until all is evenly coated.

Spread the mix out into a baking dish, then throw it in the fridge while you melt the chocolate.

BOO! Chocolate Peanut Butter Bars |

For the peanut butter, I recommend using an organic, no-sugar-added peanut butter – as in just peanuts and sea salt. No Jiff, or any other kinds of no-stir peanut butter that contains oil and/or sugar. You just want natural peanut butter. This will give you the best flavor and texture. But I mean, of course, if all you have is Jiff or Skippy, it all works!

Melt the chocolate, then pour it over the bars and spread it out in an even layer.

Take the melted white chocolate (use high quality, trust me it makes a difference) and dollop it over the chocolate in teaspoon and tablespoon sizes. Next, use a skinny skewer or the end of a skinny spoon and gently pull the white chocolate down to create a “ghost” shape. Then use mini candy eyes or sprinkles for the eyes.

Then just chill and cut the bars into awkward-shaped.

BOO! Chocolate Peanut Butter Bars |

The secret to success with these bars is to not stress about making them perfect. The more imperfect the spookier they look.

Over the years I’ve learned to love and embrace the “imperfect” look. The awesome thing about Halloween treats is that the more imperfect they look, the better.

It’s all about that messed up, spooky vibe, so embrace the imperfections here. No one ghost should look like another.

You can pack them up and take them to the school Halloween party. Or serve them up at your adult-filled Halloween bash.

Whatever route you go, these ghostly bars will be loved.

BOO! Chocolate Peanut Butter Bars |

Looking for other Halloween cookies? Here are my favorites: 

“I put a Spell on You” Poison Apple Martini

Black Widow Peanut Butter Bars

Hocus Pocus Spellbook Brownies

Spooky Halloween Pretzels

BOO! Chocolate Peanut Butter Bars

Milk Chocolate Stuffed Jack-O’-Lantern Cookies

Black Cat Pumpkin Cupcakes

Roly Poly Pumpkin Cookies

Lastly, if you make these BOO! Chocolate Peanut Butter Bars, be sure to leave a comment and/or give this recipe a rating! Above all, I love to hear from you guys and always do my best to respond to each and every comment. And of course, if you do make this recipe, don’t forget to tag me on Instagram! Looking through the photos of recipes you all have made is my favorite!

BOO! Chocolate Peanut Butter Bars

Prep Time 20 minutes
Cook Time 5 minutes
chill 30 minutes
Total Time 55 minutes
Servings: 24 bars
Calories Per Serving: 1642 kcal

Nutritional information is only an estimate. The accuracy of the nutritional information for any recipe on this site is not guaranteed.


  • 1. 1. Line a 9×13 inch baking dish with parchment paper. 
    2. In a large bowl, combine the corn flakes, brown rice krispies, and 1 cup peanut butter.
    3. In a pot, combine the honey and maple syrup. Bring to a boil over medium heat. Cook 2 minutes, then remove from the heat and pour the mix into the corn flake/peanut butter bowl and stir well. Spread the mixture out into the prepared pan, packing it in tightly. Place in the fridge for 15 minutes.
    4. Meanwhile, melt together the chocolate and 1/4 cup peanut butter in the microwave. Spread the mix over the corn flake mix.
    5. Melt the white chocolate, then spoon a small dollop (1 teaspoon for small ghosts and 1 tablespoon for large ghosts) of white chocolate onto the chocolate, making sure each ghost is 1 inch apart from the other. Using a wooden skewer or the end of a skinny spoon, gently drag the white chocolate into a ghost shape, don't worry about making these perfect, the more imperfect they look, the better. 
    6. Insert 2 mini candy eyes. Return to the fridge to set, about 15 minutes, cut around the ghost, creating irregular shapes. Keep in the fridge until ready to serve. BOO! 
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BOO! Chocolate Peanut Butter Bars |

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  1. 5 stars
    Made these for some work parties and they were a huge hit! They are my new go-to party dessert! For the recipe I didn’t need all of the white chocolate, I probably only used about 4-5 oz for 2 batches, but that was just my experience.

    1. Thanks so much Chessa! So glad you have been enjoying this recipe and thanks for sharing it with so many others! xx

    1. Hi Victoria,
      Awesome!! Love to hear that these bars were a winner, I appreciate you making them and your feedback! xx

  2. Hi! I’m so excited to make these for Halloween but I do have a question- What else is sprinkled on top of the chocolate? Not sure if it was chocolate chips – Next to the chocolate swirls – thanks!