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Gooey White Chocolate Fluffernutter Cake Bars

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Ahhh, summer is officially here which means more fun time to cook with the kids.  My Gooey cake bars are so simple (not to mention ridiculously delish) and the kids absolutely love to get their hands dirty to help with this one.

My favorite part about these bars is the gooey fluffernutter topping, its almost caramel like consistency which makes for a perfect gooey treat.  They travel well so they’re perfect for bake sales, family picnics and parties.

Whatcha waiting for, get baking!  PS, if you can even believe it my kids are still in school!  …no pics of them helping me until after this week, lol!

Line up: Yellow cake mix, egg, butter, marshmallow creme, peanut butter, sweetened condensed milk and white chocolate chips.


Add your cake mix to a large bowl.


Add a pretty little egg.


…and a softened stick of butter.


Mix, mix and mix.  You can do this with your stand mixer or use your hands to get a dough like this.


Press into a 9×13 inch baking pan.  I like lining with foil so after it cools, I can pull the whole sheet out and cut into perfect little squares.  Do you like my Sally Hansen sticker nails?!  Lol.  I like them but do not like that they only last about 4 days 🙂  Cute though!


Press evenly throughout.


Time for the gooey fluffernutter topping.  Place your peanut butter, marshmallow creme and sweetened condensed milk into a large bowl, mixing to combine.  This is what turns caramel-like once baked.  Mmmmm!

Pour it over your pressed crust.  Definitely lick the spoon, it’s worth it 🙂


Pour  a nice bag of white chocolate chips over top and bake 350 degrees F. for 23-25 minutes.  Let cool completely and….

What you’ll find are these gooey bars of deliciousness!  Perfect for any occasion, Enjoy friends!


Gooey White Chocolate Fluffernutter Cake Bars

1 box Yellow Cake Mix 

1 large egg

8 tablespoons (1 stick) unsalted butter, softened

1/2 cup creamy peanut butter

1/2 cup marshmallow creme

14 ounce can sweetened condensed milk

12 ounce bag white chocolate chips

1. Preheat oven to 350 degrees F. and line a 9×13 inch baking dish with foil and spray with cooking spray.

1. Place cake mix, egg, and butter into a large bowl. Mix until well combined, will be the consistency of thick cookie dough. I used my hands towards the ends. Press dough into prepared baking pan.

2. Place peanut butter, marshmallow creme and condensed milk into a large bowl and mix until well combined. Pour over crust then top with white chips. Bake for 23-25 minutes, until cooked through. Center will seem somewhat jiggly, but will set up while cools.

3. Let cool completely, cut into squares and serve.

Makes 12 bars



Have a great rest of your week and weekend!  Come back soon 🙂

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111 Responses | Comments RSS

  1. 51

    Oh, good Heavens, Jenny! These look fantastic! I’m in charge of teacher appreciation this month at church – I need a special something for them tomorrow & I just found what it will be! Thanks for your post!

  2. 52
    Chaya says:

    I love your creativity and how you turned a relatively easy recipe into something spectacular. I know you are busy but if you could, please link this to Bake with Bizzy. I know, I want to make this and I am sure, many others do, as well.

  3. 53

    These look absolutely sinful. I’m loving it.

  4. 54
    Taylor says:

    Wow, these look amazing! I will definitely have to try these!

  5. 55
    Shaina says:

    So much fun! These would be great for a 4th of July picnic!

  6. 56
    Mads says:

    Mmmm sweetened condensed milk makes everything better. And who can pass up fluffernutter?!?

  7. 57
    Mrs. L says:

    I’m pretty much addicted to anything that is “gooey cake bars”, but this? This is just over the top and I can’t wait to make them!

  8. 58
    Lindsay says:

    Yum! I just made these with a few changes. I halved the recipe in a square pan (still used 1 egg). I used chocolate cake mix and chocolate chips because that’s what I had on hand. I think next time it would be good to add some PB chips, too. Thanks for the great recipe!

  9. 59

    Made these last night – fantastic. I didn’t realize the PB/mallow mixture would stay so soft, so they were a little messier than I anticipated, but they were still delicious! Shared them with 2 different neighbors and got thumbs up all around!

  10. 60

    […] to relax – baking. I wanted to make a special treat to take to work tomorrow so I headed to Picky Palate – my favorite blog to find yummy dessert ideas.  I ended up baking these Gooey White Chocolate […]

  11. 61
    Monica says:

    Hi Jenny – I made these last weekend for a BBQ and they were a HUGE hit! Needless to say, you have many new fans 🙂 Thanks for the great recipe.

  12. 62
    Tracy says:

    I am planning on making these for a BBQ on Sunday. How far in advance is it safe to make them? I was planning on doing them tonight, since I have time and I’m baking something else for tomorrow night. If I keep them air tight in the fridge uncut, will they be okay for Sunday? They need to travel in the car about two hours as well. Thanks!

  13. 63
    Carolinachef says:

    I made these the other day and, although tasty, they did not set up well at all. I also ended up with twice as much as the recipe said I would. I am not sure if I did something wrong or if the recipe just didn’t work as planned. I’ll try again though, but maybe with a shortbread crust instead of the cake.

  14. 64
    Tom says:

    Made these twice to take to 2 BBQs over 4th of July weekend and they were amazing! Your instructions were perfect and they came out looking exactly like your pics. A huge hit with young and old alike! Thank you thank you thank you!!!

  15. 65
    Cheryl Kelley says:

    These were a big hit in our house! My 9 y.o. suggested that next time, we should use a chocolate cake mix and substitute Nutella for the peanut butter and see how it tastes! I think he is on to something!

  16. 66
    Lauren says:

    Holy cow these are good! Thanks for the simple and delicious recipe!

  17. 67

    […] Gooey White Choc Fluffernutter Cake Bars […]

  18. 68
    jessie says:

    i just made these the other day and they were awesome! thanks so much for all the great recipes 🙂

  19. 69

    […] Gooey White Chocolate Fluffernutter Cake Bars From Picky Palate […]

  20. 70

    I have these in the oven right now… I didn’t have any white chocolate chips so I substituted peanut butter chips… I hope they turn out okay.

  21. 71
    Amanda says:

    I made these last night. The recipe was perfect and they are so, so good! I cut off the edges before making pretty squares, and am enjoying the crusts with my morning coffee.

  22. 72

    […] we baked!  We baked brownies from a mix (don’t judge), these, and […]

  23. 73
    Kim says:

    Thank you so much for your wonderful ideas… I made this tonight, I made a couple changes (added chunky peanut butter and butterscotch chips) and it was awesome… Thanks again for all the great recipes you post, my neighbors thank you too 🙂

  24. 74

    […] is his.  To our great delight, he came across this delectable and incredibly simple recipe:  Gooey White Chocolate Fluffernutter Cake Bars.  Can you guess what happened next?  Yes!  We raced to the grocery store, got the ingredients, […]

  25. 75
    Sharalee says:

    These are amazing!! I love peanut butter fudge and the center of these bars tastes just like fudge.

  26. 76
    Lori says:

    I made these last night and they were a HIT at our house! My dd (11) who doesn’t like sweet treats asked for seconds. 6 out of 6 LOVED them!! Thank you! I didn’t have a cake mix on hand (unusual for me…) so I used my go-to recipe for a yellow cake mix:
    2 cups cake flour (I have used all purpose flour and it has worked)
    2 1/2 teaspoons baking powder
    1 teaspoon salt
    1 1/4 cups sugar
    1/2 cup vegetable shortening (I only use Crisco)

    Thank you for a new favorite dessert for my family!! 🙂

  27. 77
    Kelli says:

    Wow these babies are rich! Almost like a soft fudge on top.

  28. 78

    OHMYGAHHH these are so good! My family is going crazy for them.. I made them this afternoon and they want another batch made for tomorrow!

  29. 79

    […] Picky Palate’s Gooey White Chocolate Fluffernutter Cake Bars: […]

  30. 80
    Megan Lapke says:

    This is what I’m ALWAYS craving for dessert. Thanks so much!!!

  31. 81

    I commented before, but I have to update you..
    These are my 86 year old grandpa’s favorite dessert HANDS DOWN.
    (And we’re trying to get him to put on weight, so honestly.. this recipe is a blessing!)
    It’s adorable, he truly loves them. I’m making my third batch now!
    Thank you thank you for such a delicious recipe!

  32. 82

    […] that they wanted blondies so I set out looking for a new recipe to try. I came across a recipe for Fluffernutter Cake Bars and they seemed perfect. But I didn’t feel like making a trip to the store so I altered the […]

  33. 83

    […] Girl Scout cookie cake bars. You’ve seen Jenny’s fabulous cake bars before right? Her Gooey White Chocolate Fluffernutter Cake Bars are life changing. One of my top 5 favorite desserts of all time, hands down. They must be made […]

  34. 84
    Shephalli says:

    The recipe looks amazing. Question – can i skip the peanut butter for people that are allergic? What should i replace it with instead?

  35. 85
    tz7568 says:

    You could use any flavor of came mix do you think?

  36. 86
    Lori says:

    I LOVED this sandwich as a child. Could not get enough of it.

  37. 87
  38. 88

    […] Gooey White Chocolate Fluffernutter Cake Bars by Picky-Palette […]

  39. 89
    Maddy says:

    What do I do if I have no marshmallow cream?

  40. 90
    Brittany says:

    my husband and i are waiting for these to cool right now. I’m tempted to just grab a fork right now lolol

    thanks for the deelish recipe 🙂

  41. 91
    Julie Thoren says:

    I use chopped Reese’s Peanut Butter Cups instead of the white chocolate chips on top and it is AMAZING!!

  42. 92

    […] Gooey White Chocolate Fluffernutter Cake Bars 1 box Yellow Cake Mix 1 large egg 8 tablespoons (1 stick) unsalted butter, softened 1/2 cup creamy peanut butter 1/2 cup marshmallow creme 14 ounce can sweetened condensed milk 12 ounce bag white chocolate chips 1. Preheat oven to 350 degrees F. and line a 9×13 inch baking …Recipe link:… […]

  43. 93

    […] Gooey White Chocolate Fluffernutter Cake Bars from Picky Palate […]

  44. 94
    Sue says:

    My Grandson made this yesterday. Very rich,but very good didn’t last long.

  45. 95

    […] decided to make Fluffernutter Blondies; Peanut butter, fluff, condensed milk, butter, sugar, yellow cake mix and white chocolate […]

  46. 96

    […] Like it, hate it, don’t care? okay. Chocolate Fluffernutter Cake Bars (Adapted from Picky Palate)   Ingredients: 1 box chocolate cake mix 1 large egg 1 stick (8 tablespoons) butter, softened […]

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Jenny Flake

Welcome to Picky Palate, my online kitchen! You'll usually find me with a cookie in one hand and a salad in the other. It's all about the balance :) The recipes you'll see are my creations. The Picky Palate Cookbook is now available. Enjoy!



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