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    Home » Baked Goods » Brownies & Bars

    Published: Apr 15, 2021 · Modified: Apr 4, 2022 by Kelly Hamilton · This post may contain affiliate links

    Peanut Butter Rice Krispie Treats

    Jump to Recipe Jump to Video

    These Peanut Butter Rice Krispie Treats are soft, chewy, and have gooey pillows of marshmallows throughout. Made with only 6 simple ingredients and ready in less than 1 hour.

    overhead shot of peanut butter rice krispie treats, some with a chocolate drizzle and some without
    Jump to:
    • Why You'll Love Peanut Butter Rice Krispie Treats
    • Ingredients Needed
    • Step by Step Instructions
    • How to Make Rice Krispie Treats in the Microwave:
    • Frequently Asked Questions
    • Add-in & Topping Ideas:
    • Storing & Freezing
    • Want to try more peanut butter recipes?
    • 📖 Recipe

    Rice Krispie Treats are a classic from my childhood and there is nothing I love making more, probably because they are so dang easy to make! Throw together a few ingredients and you have a delicious treat in less than 1 hour.

    Peanut Butter Rice Krispie Treats are a little twist on the classic recipe. Adding creamy peanut butter makes these even more irresistible. These are seriously so good!

    My other favorite rice krispie recipe is my Brown Butter Rice Krispie Treats! If you're looking for more peanut butter recipes, my peanut butter pie is my go-to fav, as well as my small-batch peanut butter cookies!

    Why You'll Love Peanut Butter Rice Krispie Treats

    • You only need 6 ingredients.
    • They take about 10 minutes to make and they cool down quickly, so they'll be ready in under an hour!
    • You can add a chocolate or peanut butter drizzle on top which makes them even better.
    • You don't have to turn on your oven to make them.
    • They're fun to make with kids!

    Ingredients Needed

    Here are some notes on a few ingredients- please see the full ingredient list in the recipe card below!

    • peanut butter- creamy peanut butter is my fav! I didn't test this with natural peanut butter but it should work fine.
    • marshmallows- mini marshmallows work best in this recipe but you can use big ones if that's all you have. The mini ones are great for reserving a cup and adding them in at the end for pockets of gooey marshmallows.
    • rice krispie cereal- obviously needed to make peanut butter rice krispie bars! I used regular rice krispie cereal but I have suggestions for substitutions below.
    ingredients laid out to make peanut butter rice krispie treats

    Step by Step Instructions

    Step 1: In a large pot or dutch oven, melt together the butter and peanut butter on medium heat until completely smooth and combined.

    Step 2: Turn the heat to low and add in the marshmallows, reserving 1 cup for later use. Mix until the marshmallows have melted and then immediately remove from the heat.

    Step 3: Pour in the rice krispies and mix until just coated, then add in the extra cup of marshmallows. Mix until all the cereal is coated and press into a baking dish using a silicone spatula (helps it to not stick). Allow them to cool before cutting into bars 

    How to Make Rice Krispie Treats in the Microwave:

    Step 1: Melt the butter and peanut butter in the microwave in a large microwave-safe bowl. Microwave in 1-minute intervals on medium power, stirring in between until smooth and melted.

    Step 2: Add in the vanilla and salt, mixing to combine.

    Step 3: Pour in the marshmallows and put them back into the microwave at 1-minute intervals until melted and smooth (mixing in between).

    Step 4: Pour in the cereal and coat evenly, then press it into the pan and allow it to cool.

    step by step how to make: stick of butter and peanut butter in a dutch oven, marshmallows poured into the melted mixture, rice krispie cereal mixed into melted marhsmallow mixture.

    Frequently Asked Questions

    What peanut butter is best?

    My go-to peanut butter for this recipe is regular creamy peanut butter. It works really well and melts perfectly with the butter.

    I did not test this recipe with anything other than creamy peanut butter, but I believe natural peanut butter or almond butter could work! Just make sure the nut butter is fully melted and mixed well with the butter/melted marshmallows so that the oil doesn't separate. I would do my best to avoid using super oily nut butter.

    Can I cut this recipe in half?

    Totally! Just cut all the ingredients in half and use a 9x9 or 8x8 pan.

    My rice krispie treats are hard, why?

    There could be a few reasons why. First, make sure not to overcook the marshmallows. You want to melt them over low heat and as soon as they are melted, take them off the heat. Overcooked marshmallows = hard treats. you also want to make sure you don't pack them into the pan too much because that can make them too hard as well.

    Can I make these ahead of time?

    Yes! If you plan on making these ahead, I would try and do it only a day to 2 before so that they stay fresh. Rice krispie bars tend to harden up after a few days even if they are stored in airtight containers.

    speckled plate of rice krispie treats piled on top of one another with a spoon full of peanut butter

    Add-in & Topping Ideas:

    Other ideas to add to your peanut butter rice crispy treats:

    • Different cereal- You can use any brand of rice cereal or totally change it up. Some good cereals that come to mind and would pair well with peanut butter are cocoa krispies and golden grahams!
    • Chocolate drizzle- this would also be a great idea! Just melt some chocolate in the microwave and drizzle over the top of your cooled treats. Chocolate peanut butter rice krispie treats sounds amazing to me!
    • Chocolate chips- this is obvious because what's better than chocolate and peanut butter? I would add about 1 cup of chocolate chips to the mixture. It might melt a little since the marshmallow mixture will be warm but it's ok.
    • Chopped candy- Reese's Cups in these? Sign up me. You could also do Reese's Pieces, Snickers, Twix, Butterfingers! Basically, anything would be delicious- I would use 1 cup of any add-in.
    • Sprinkles- because sprinkles legit make everything better!

    Storing & Freezing

    Store these rice krispie peanut butter treats in an airtight container at room temperature. They are most fresh/soft 2-3 days after making but are fine to eat after that time. I do not recommend storing these in the fridge as it makes them very hard!

    They can also be frozen for up to 2 months in an airtight container. I recommend putting wax or parchment paper between the layers before freezing.

    rice krispie treats on parchment paper with a chocolate drizzle over top one of them

    Want to try more peanut butter recipes?

    • Small-Batch Peanut Butter Cookies
    • Peanut Butter Pie
    • 3-Ingredient Peanut Butter Oatmeal Balls
    • Brown Butter Rice Krispie Treats

    If you made this recipe, I would love to know what you thought! Leave me a star rating and a comment below ⭐️ Your reviews not only help my business but other bakers as well!

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    📖 Recipe

    Peanut Butter Rice Krispie Treats

    Kelly Hamilton
    These Peanut Butter Rice Krispie Treats are soft, chewy, and have gooey pillows of marshmallows throughout. Made with only 6 simple ingredients and ready in less than 1 hour.
    5 from 11 votes
    Print Recipe Pin Recipe
    Prep Time 5 mins
    Cook Time 10 mins
    cooling time 30 mins
    Total Time 45 mins
    Course Dessert
    Cuisine American
    Servings 16 servings
    Calories 316 kcal

    Equipment

    • 9x13 inch baking pan
    • Parchment Paper Sheets
    • Dutch Oven
    • Silicone Spatula

    Ingredients
     
     

    • ½ cup unsalted butter (1 stick)
    • 1 cup creamy peanut butter
    • 20 ounces (2 bags) mini marshmallows set aside 1 cup of marshmallows for mixing in later in recipe
    • 1 teaspoon vanilla extract
    • ½ teaspoon salt
    • 8½ cups rice krispie cereal

    Instructions
     

    • Prepare a 9x13 pan by lining it in parchment paper. Leave some overhang so it's easy to remove later. Set aside.
    • In a large pot or dutch oven, melt the butter and peanut butter together over medium heat. Once completely melted and smooth, turn the heat to low and stir in the marshmallows (keeping the extra 1 cup aside for later), vanilla, and salt. Stir marshmallows until they are completely melted.
    • As soon as the marshmallows have melted, remove from the heat and add the rice cereal. Give it an initial quick mix, preferably with a silicone spatula so it doesn't stick. Dump in the cup of extra marshmallows while it's still warm and then mix well, making sure to coat all the cereal.
    • Press the mixture into the 9x13 pan. Use the silicone spatula to press it down evenly. Let it cool for at least 45 minutes and then cut into squares/bars and enjoy!

    Video

    Notes

    • Cut into smaller squares for more servings. 
    • How to make in the microwave:
      • Melt the butter and peanut butter in the microwave in a large microwave-safe bowl. Microwave in 1-minute intervals on medium power, stirring in between until smooth and melted. Add in the vanilla and salt, mixing to combine.
      • Pour in the marshmallows and put them back into the microwave at 1-minute intervals until melted and smooth (mixing in between).
      • Finish recipe at step 4 above
    • Store in an airtight container for 2-3 days for optimal freshness. 

    Nutrition

    Calories: 316kcal | Carbohydrates: 45g | Protein: 6g | Fat: 14g | Saturated Fat: 5g | Trans Fat: 1g | Cholesterol: 15mg | Sodium: 254mg | Potassium: 127mg | Fiber: 1g | Sugar: 23g | Vitamin A: 1167IU | Vitamin C: 9mg | Calcium: 11mg | Iron: 5mg
    Tried this recipe?Let us know how it was! Share on Instagram and tag @bake.andbacon

    This post contains affiliate links which means if you purchase something off of one of those links I make a small commission at no extra cost to you. Thanks for supporting my blog!

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    Reader Interactions

    Comments

    1. Kelan says

      August 16, 2022 at 7:39 am

      5 stars
      Absolutely loved these! They were devoured by everyone - thanks for the recipe!!

      Reply
      • Kelly Hamilton says

        August 16, 2022 at 8:58 am

        Happy to hear you enjoyed these!!

        Reply
    2. Pam says

      April 06, 2022 at 8:22 am

      5 stars
      This is my new favorite rice krispie treat recipe. So so good!

      Reply
      • Kelly Hamilton says

        April 10, 2022 at 10:59 am

        So happy to hear, Pam! Thanks for trying them out!

        Reply
    3. Ryan says

      September 10, 2021 at 10:08 am

      5 stars
      Love this recipe! it's so easy and great to bring to parties!

      Reply
      • Kelly Hamilton says

        September 10, 2021 at 3:32 pm

        Thanks so much for trying this recipe!

        Reply
    4. Molly says

      July 12, 2021 at 2:01 pm

      5 stars
      So delicious, this is my new forever rice crispy recipe. These rice crispies hit different!

      Reply
      • Kelly Hamilton says

        July 13, 2021 at 12:17 pm

        Thanks so much for trying this recipe, Molly! So glad you loved it 🥰

        Reply
    5. Katy McAvoy says

      April 27, 2021 at 11:43 am

      5 stars
      The whole family LOVED these peanut butter Krispie treats! I like the reserved marshmallows getting added in at the end. I'd never think do that, but it adds great texture! 🙂

      Reply
      • bakeandbacon says

        April 27, 2021 at 5:42 pm

        So glad to hear you and the family loved these Katy! thanks so much for trying the recipe 🙂

        Reply

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    Hi, I'm Kelly! I'm the self-taught baker, food photographer, and dog mom behind Bake & Bacon. I'm here to bring you easy recipes for my favorite things- delicious breakfasts and decadent desserts!

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