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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 | halfvakedharvest.com

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 | halfvakedharvest.com

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 | halfvakedharvest.com

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 | halfvakedharvest.com

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 | halfvakedharvest.com

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 | halfvakedharvest.com

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.

Instructions

  • 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 | halfvakedharvest.com

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Comments

    1. Hey Maureen! I am sure an equal amount if rice krispies will great. Love that idea! Please let me know if you have any other questions. I hope you love this recipe! Thank you! xTieghan

  1. These were AMAZING! So easy and all the flavors and textures are SPOT ON! Seriously so yummy! Easy and classic! Thanks girl!

  2. 5 stars
    These were yummy and quite simple. I used the “less gooey” version and was glad as they were still a little gooey, but still good. I did have a problem cutting though as my chocolate cracked and even a couple of my white ghosts. Did you have that problem at all? Perhaps I should have added a little coconut oil to the chocolate while melting.

    1. HI! I don’t have issues with my chocolate cracking ever. What brand chocolate are you using for both the chocolate and white chocolate? I wonder if that might be the issue? you can try adding coconut oil to see if that helps! Please let me know if you have any other questions. I am so glad you love this recipe! Thank you! xTieghan ???

  3. Hi Tieghan! I’m so glad I (re)discovered your blog because it gives me ideas for a Halloween party I have to bake for on Friday. Would you me so kind and add the metrics for the Halloween recipes? (it’s a suggestion because I bet tons of people are interested by your Halloween recipes and may be like me and never worked with cups). That’d be soooo nice! But if you can’t don’t worry, your website is the bomb. xoxo

    1. Hi Eva! I am so glad you have discovered my blog and I hope you continue to love it! Thank you so much! xTieghan

  4. 5 stars
    I’ve made these bars twice. Once as a gift and received lots of compliments and again this week for our company cookie swap. These bars won the cookie swap contest!! So easy to make and SO delicious! Thanks Tieghan

  5. Hi, I made these bars tonight and they really are yummy. Since Halloween is over, I decided to just do a random drizzle with the white chocolate. I used Nestle toll house white chocolate chips but they didn’t want to melt. I put them in the microwave and they became very dry so I started over using a double boiler. That was better but it still didn’t melt enough for drizzling. Did I use the wrong kind of white chocolate? Even though they weren’t beautiful, they tasted great! I will try again after I hear from you. Thanks for your time.

    1. Hey Becky! Some brands of white chocolate do not melt well. I recommend ghirardelli white chocolate and melted at a very, very low temperature. LOW heat on the stover, stirring consistently is best. Please let me know if you have any other questions. So glad you love this recipe. Thanks so much and happy Thanksgiving! xTieghan

  6. 5 stars
    I made these last night and t hey came out great! I opted for the version with brown sugar and less maple syrup so they’d be less gooey. They seem to be holding together nicely. I’m giving them to friends who are watching my cats while I go away on vacation. I am sure they will be a hit. My ghost making skills are pretty poor though but they sure do taste delicious!! Thank you for the great recipes. Oh also super easy to make!!

  7. How did you make the spiderwebs? Concentric circles and used toothpick to pull from the middle? I think I’m going to make a double batch for a Halloween potluck at work!

    1. Hey Alix!

      To make webs, pipe the white chocolate into circle spirals. Starting at the center of each spiral, drag a toothpick across the chocolate moving out to create a webbing effect. Repeat this process around the entire circle and then and the remaining spirals.

      Please let me know if you have other questions. I hope you love this recipe! thanks so much! xTieghan

  8. 4 stars
    Loved these BUT as others have noted, they were super gooey and the bottom did not hold well together. They were delicious (what’s not to love with PB and chocolate?!) but I followed the recipe as is and let them sit overnight and still barely hold together. Would need to adjust the recipe to consider making again.

  9. Chocolate peanut butter ANYTHING is a winning combination. I love cereal bars–they are super crunchy, sweet, and perfect for any snack. Happy Halloween!

  10. These turned out so cute and they were easy! The only problem I had was, even after chilling, the corn flake layer was gooey and a little more moist then I think would have been ideal. Not sure if it was our ingredients or we measured something wrong, or if that’s just how they are. I would make them again though, but I might experiment with the ingredients a bit to see if I could get a less moist bottom layer.

    1. Hey CJ! The bottom layer is meant to be gooey. If you want something drier, try adding more cornflakes to “soak” up the peanut butter. Please let me know if you have any other questions. So glad you love this recipe. Thanks so much! xTieghan