• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
Confessions of a Baking Queen logo
  • About
    • Contact
  • All Recipes
    • St. Patrick's Day
    • British Recipes
    • Breakfast
    • Desserts
      • Bars
      • Breads
      • Brownies
      • Caramel
      • Cakes
      • Chocolate
      • Confections
      • Cheesecakes
      • Cookies
      • Cupcakes
      • Custards & Puddings
      • Creme Brûlée
      • Lemon
      • Peanut Butter
      • Pies & Tarts
      • Frostings
      • Scones
    • Appetizers
    • Drinks
    • Egg Free
    • Gluten Free
    • Spring
    • Fall
    • Summer
  • Desserts
    • Cookies
    • Cakes
    • Bars
    • Cheesecakes
  • Shop
menu icon
go to homepage
  • About
  • All Recipes
    • Recipe Search
    • Recipe Index
  • Chocolate
  • Cakes
  • Cookies
  • Shop
    • Facebook
    • Instagram
    • Pinterest
    • YouTube
  • subscribe
    search icon
    Homepage link
    • About
    • All Recipes
      • Recipe Search
      • Recipe Index
    • Chocolate
    • Cakes
    • Cookies
    • Shop
    • Facebook
    • Instagram
    • Pinterest
    • YouTube
  • ×
    Home » Bars

    Peanut Butter Marshmallow White Chocolate Bars

    By Elizabeth Waterson // Jun 2, 2012 (Updated Dec 31, 2025) // 1 Comment

    Jump to Recipe·Leave a Review
    This post may contain affiliate links, which may pay me a small commission for my referral at no extra cost to you! Thank you for supporting Confessions of a Baking Queen!

    66 shares
    Peanut Butter Marshmallow White Chocolate Bars on white plate on a wood surface

    Super Easy. Cake Mix Base. This is a delicious recipe for Peanut Butter Marshmallow White Chocolate Bars. You only need a small piece!

    Peanut Butter Marshmallow White Chocolate Bars cooling on a piece of foil

    WOAH are these babies good! When I saw this recipe it automatically went on my "To Bake" list. I won't lie it has taken me a while to come back to these as my "list" is ever-growing. I wanted to use up what I had in my baking cupboards and I happened to have all of these ingredients on hand 🙂 YAY! And I have a kids birthday party to go to and I am going to work tonight so I can hopefully get rid of the whole pan so I don't sit and eat every last bite myself! Yes, I have done that before on many occasions :/

    These bars are delicious and very rich! I like to cut the bars into small squares because they are so rich but any size will do! Enjoy!

    Make sure to join our Newsletter and follow us on Pinterest, Instagram, Facebook, & Twitter.

    ★★★★★ Please let me know if you make this recipe by leaving a star rating and comment below!

    Print

    Recipe Card

    clockclock iconcutlerycutlery iconflagflag iconfolderfolder iconinstagraminstagram iconpinterestpinterest iconfacebookfacebook iconprintprint iconsquaressquares iconheartheart iconheart solidheart solid icon
    Peanut Butter Marshmallow White Chocolate Bars on white plate on a wood surface

    Peanut Butter Marshmallow White Chocolate Bars

    5 Stars 4 Stars 3 Stars 2 Stars 1 Star

    No reviews

    Print Recipe
    Pin Recipe

    Super Easy. Cake Mix Base. This is a delicious recipe for Peanut Butter Marshmallow White Chocolate Bars. You only need a small piece!

    • Total Time: 41 minutes
    • Yield: 9-16 Bars 1x

    Ingredients

    Scale
    • 1 Yellow Cake Mix
    • 1 Stick of Softened Butter
    • 1 Large Egg
    • ½ Cup Creamy Peanut Butter
    • ¾ Cup Marshmallow Creme
    • 14oz Can of Condensed Milk
    • 11 oz Bag of White Chocolate Chips
    • ¾ Cup Mallow Bits

    Instructions

    1. Preheat oven to 350F and line a 9X13 pan with foil and spray with nonstick cooking spray or butter the pan. 
    2. In a medium-sized bowl mix together the cake mix, butter and egg until combined. You will end up with a thick dough. Press the dough into the pan.
    3. In a medium-sized bowl mix together the peanut butter, marshmallow creme, and condensed milk until combined. Pour over the dough. Top with white chocolate chips and mallow bits. 
    4. Bake for 24-26 minutes. Let cool in pan on a wire rack for at least 1 hour before serving. Enjoy 🙂 

    Equipment

    oxo food scale

    OXO Kitchen Scale

    Buy Now →
    9X13 pan

    9X13 Pan

    Buy Now →
    kitchen aid cordless hand mixer

    Cordless Hand Mixer

    Buy Now →

    Notes

    Recipe slightly adapted from Picky Palate

    • Author: Elizabeth Waterson
    • Prep Time: 15
    • Cook Time: 26
    • Category: Dessert
    • Method: Bake
    • Cuisine: American

    Did you make this recipe?

    Tag @confessionsofabakingqueen on Instagram and hashtag it #cbqbakes

    Recipe Card powered byTasty Recipes

    Explore Recipes

    BarsMarshmallow, Peanut Butter, White Chocolate

    More Bar Recipes

    • A stack of three rich, fudgy dark chocolate brownies with a sprinkling of flaky sea salt on top, set on a light-colored surface. The top brownie has a bite taken out of it.
      Fudgy Dark Chocolate Brownies
    • A close-up of pecan pie cheesecake bars with a graham cracker crust, creamy cheesecake layer, and caramelized pecans on top, set on a light marble surface.
      Creamy Pecan Pie Cheesecake Bars
    • Three rectangular raspberry lemon bars with a golden crust and swirled red and yellow top, garnished with fresh raspberries, served on a round white plate.
      Tart and Sweet Raspberry Lemon Bars
    • chocolate peanut butter rice krispy treats on a white surface.
      Super Chocolatey Peanut Butter Rice Krispie Treats

    Reader Interactions

    Comments

      Leave a comment & rate this recipe Cancel reply

      If you love this recipe, please consider leaving a ⭐ star rating ⭐ when you post a comment. Star ratings help people discover my recipes online. I am incredibly grateful for your support! —xx Liz

      Your email address will not be published. Required fields are marked *

      Recipe rating 5 Stars 4 Stars 3 Stars 2 Stars 1 Star

      This site uses Akismet to reduce spam. Learn how your comment data is processed.

    1. Michael Ann says

      February 26, 2013 at 8:55 am

      I have been dying to find a recipe that combined these ingredients. I often throw some marshmallows, PB chips and white chocolate chips together in a bowl and just snack on them together! Will definitely try this recipe!

      Reply

    Primary Sidebar

    elizabeth mixing frosting

    Hiya! I am Elizabeth Waterson, welcome to my treat-filled site. After spending 15 years in the restaurant industry and growing up baking, I wanted to share my love of baking with you all. My step-by-step tutorials will help you learn how to bake at home. Confessions of a Baking Queen (CBQ) has been featured in CBS LA, HuffPost Taste, BuzzFeed, Taste of Home, and more! Here you will find loads of sweet recipes with a few savory ones for good measure. Feel free to message me with any questions! Happy Baking! 

    More about me →

    Winter Favorites

    • bowl of chicken mulligatawny soup on a light surface with a white and orange linen
      British-Style Chicken Mulligatawny Soup (Comforting & Flavorful)
    • A close-up of a slice of lemon cream cheese bundt cake with a light glaze on top, served on a white plate. The texture of the cake looks moist and dense, and part of the whole cake is visible in the background.
      Lemon Cream Cheese Pound Cake
    • A slice of creamy cheesecake with a graham cracker crust, topped with bright yellow lemon curd and whipped cream, sits on a white plate. A fork holds a bite of cheesecake in the foreground, with lemons in the background.
      Fresh & Tangy No Bake Lemon Cheesecake
    • slice of lemon ricotta cake on a white plate with lemons and the whole cake on a light grey surface.
      Soft Lemon Ricotta Tea Cake
    • salted caramel apple crisp served in a white dish with ice cream on top
      Crisp Crumbles & Gooey Apples: This Caramel Apple Crisp Is Everything
    • Individual slices of lemon cheesecake bars on a marble counter with fresh lemons. One slice has a bight taken out of it.
      Lemon Cheesecake Bars
    • lemon curd cookies dusted in powdered sugar on a white plate on top of a stripped linen on a light surface with more lemons
      Lemon Curd Cookies
    • cut open orange olive oil cake on a white plate on a marble surface with a floral linen
      Orange Olive Oil Cake
    • spatula taking a slice of lemon olive oil cake on a brown marble surface with a blue linen
      Lemon Olive Oil Cake (Moist & Bright)
    • slice of pear bundt cake cut against the full cake on a wire rack on a light brown surface with a blue and white linen, pear and coffee cup
      Moist Pear and Spice Bundt Cake
    • marshmallow topped hot chocolate in a large glass mug on a white marble surface next to chocolate chips, marshmallows and more hot chocolate
      Crock Pot Hot Chocolate
    • close up of a rib eye roast dinner on a white plate with a stripped blue linen on a light cream surface
      Juicy Ribeye Roast Made Easy

    Featured

    featured in confessions of a baking queen

    Footer

    Join the CBQ Community

    • Sign Up! for emails and updates
    • Join our Community on Social Media
    • Instagram, Facebook & Pinterest

    Check Out Google Web Stories

    About

    • Privacy Policy
    • About Elizabeth
    • Contact

    Resources

    • The Best Baking Tools
    • Cheesecake Recipes
    • Brownie Recipes
    • Cake Recipes
    • Shop My Favorite Products & Tools

    ↑ back to top

    As an Amazon Associate, I earn from qualifying purchases. Thank you for supporting Confessions of a Baking Queen.

    Copyright © 2026 Confessions of a Baking Queen

    • 7
    66 shares