White Chocolate S’mores Gooey Cake Bars

These White Chocolate S’mores Gooey Cake Bars are so chewy and decadent, and they’re filled with your favorite s’mores flavors! This recipe uses white chocolate, but you can certainly substitute it with milk or dark chocolate if you’d prefer.

Image of White Chocolate S'mores Gooey Cake Bars

White Chocolate S’mores Gooey Cake Bars

Ok, these newest gooey bars might just be my favorite yet! I had the idea instead of traditional chocolate s’mores why not play around with a white chocolate s’mores bar….and make it gooey and cake like 🙂

You will absolutely not be disappointed with this one, they are perfect to transport to a party, enjoying on family night or who am I kidding, any night!

Hope you enjoy!

Image of Ingredients for White Chocolate S'mores Gooey Cake Bars

How to Make These Marshmallow Cake Bars

Here is your line-up…Yellow cake mix (plus 1 stick of butter and 1 egg), a bag of white chocolate chips, sweetened condensed milk, graham crackers and some mini marshmallows.

Image of Yellow Cake Mix

Place your stick of butter, egg and cake mix into a large bowl.

Image of the Yellow Cake Mix in a Bowl

Anyone else love the smell of yellow cake….I mean love it?! Makes me so happy, lol!

Image of the Cake Batter

So, you’ll mix, mix, mix until you get this fabulous dough. Use your hands, much easier.

Image of the First Cake Layer

Press 1/2 of that dough into the bottom of a foil lined, 8×8 inch baking dish. Make sure you spray the foil generously with cooking spray.

Image of the Graham Cracker Layer

Top with a layer of graham crackers 🙂

Image of Mini Marshmallows

Top with a bag of white chocolate chips.

Image of the Marshmallow Layer

Next up….the mini marshmallows!

Image of the Second Cake Layer

Place the second half of the dough on top of the marshmallows.

Image of White Chocolate S'mores Gooey Cake Bars Ready for the Oven

Press evenly, does not need to be perfect 🙂

Image of Pouring Sweetened Condensed Milk

Drizzle on about 1/2 cup sweetened condensed milk and pop into the oven for about 30 minutes!

Image of White Chocolate S'mores Gooey Cake Bars in a Pan

These come out golden and beautiful. I perfer to cut off all edges about 1/2 inch, however save those edges for snacking 🙂  It just makes the squares perfect and pretty 🙂

Image of a White Chocolate S'mores Gooey Cake Bar

Starting from the bottom you have cake, graham cracker, white chocolate, marshmallow and more cake! Can’t tell you how good these are!

Image of White Chocolate S'mores Gooey Cake Bars on a Cake Stand

Image of a White Chocolate S’mores Gooey Cake Bar

White Chocolate S’mores Gooey Cake Bars

These White Chocolate S'mores Gooey Cake Bars are so chewy and decadent, and they're filled with your favorite s'mores flavors! This recipe uses white chocolate, but you can certainly substitute it with milk or dark chocolate if you'd prefer.
Course: Dessert
Cuisine: American
Prep Time 20 minutes
Cook Time 30 minutes
Total Time 50 minutes
Servings: 14 servings
Calories: 327kcal
Author: Jenny
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Equipment

  • Oven

Ingredients

  • 1 box yellow cake mix
  • 1 large egg
  • 1 stick unsalted butter softened
  • 4 1/2 full graham crackers
  • 10 oz bag white chocolate chips
  • 2 cups mini marshmallows
  • 1/2 cup sweetened condensed milk

Instructions

  • Preheat oven to 350 degrees F. and line an 8x8 inch baking pan with tin foil that's been generously sprayed with cooking spray. Make sure foil goes all the way up and over the edges for this one. It will be a full pan.
  • Place cake mix, egg, and butter into a large mixing bowl. Mix with hands until a nice dough forms. similar to a cookie dough. Press half of the dough into the bottom of the prepared pan. Layer with graham crackers, white chips then marshmallows. Top with remaining half of dough pressing evenly.
  • Drizzle sweetened condensed milk over top then bake for 28-33 minutes, until cooked through and golden brown on top. Remove from oven.
  • Let cool for 5 minutes then take a plastic knife and run along edges to loosen marshmallow (this will make your life easier when pulling foil out of pan to remove bars Let cool completely then remove bars from pan with foil edges. Cut off all edges if desired, about 1/2 inch each side. I save the edges to snack on too. Cut bars into squares and serve. They are delicious room temperature or chilled.

Nutrition

Calories: 327kcal | Carbohydrates: 58g | Protein: 4g | Fat: 9g | Saturated Fat: 5g | Cholesterol: 20mg | Sodium: 341mg | Potassium: 128mg | Fiber: 1g | Sugar: 39g | Vitamin A: 52IU | Vitamin C: 1mg | Calcium: 155mg | Iron: 1mg
Keywords: cake bars, easy dessert recipe, oven s'mores, s'mores dessert, s'mores recipe, white chocolate cake

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Have a great new week, come back soon!

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125 Responses
  1. Suzanne

    Oh my goodness…these look amazing! My 14 year old just got braces, so I’m going to have to wait to make these. Marshmallow + braces = big big mess ;-.

  2. Maggie @MaggieCooks

    Wow this looks decadent!
    My favorite picture is the one with you pouring the condensed milk I would like to eat it all!
    Love your blog and your pictures are super pretty 🙂

  3. Amanda

    So excited to see another gooey cake bar recipe from you, I am loving these! 🙂 Can’t wait to see you in San Diego, less than two weeks! 🙂 xoxo

  4. Sasha @ The Procrastobaker

    These really do look gorgeous! and i bet people wont believe what ingredients make them up, lovely recipe 🙂

  5. Liberty

    Cannot wait to make these — I was in need of a new dessert for tomorrow… I think this is the winner! Thanks 🙂

  6. Tiff @ Love Sweat and Beers

    Wow – those look great! I’ve been seeing s’more recipes pop up a lot lately, but this is the first white chocolate one I’ve noticed. I bet the extra sweetness if fabulous with the mini marshmallows!

  7. Kim

    what are you trying to do to us? kill us? wow. i put 5 pounds on – just looking at it.yummmmmmmmmmm

  8. Brenda Morton

    I always love coming to your site!! The recipes are delightful and I love the pictures and step by step procedures!! The pictures Makes it easy to see if I’m doing it the right way!! Thanks so much!!!!

  9. ~Cindy

    Get out of my way! I’m going to the grocery!!!

    Oh my, do these look scrumptious 😀 I’m allergic to cocoa [milk or dark chocolate] (Did I just hear a collective gasp?), and am always looking for alternatives to traditional recipes. This will be made today! So much for the diet.

  10. Mary @ Delightful Bitefuls

    Ooooh my! My poor thighs are going to suffer after I make these but I know it’ll be worth it 😉 YUM!

  11. Cooking Creation

    I cannot stand looking at these pictures and not eating one!!!! I am bookmarking these beauties! Thanks for sharing 🙂

  12. Ari@ThE DiVa DiSh

    S’mores anything is delicious! These look SOO moist and chewy! I am craving these right now…at 6 in the morning 🙂

  13. Holly @ The Runny Egg

    With each layer, these bars get better and better. I too love the smell (and color!) of yellow cake. It just makes me smile!

  14. Chris @ TheKeenanCookBook

    So delicious looking! I don’t know what is more torturous, the heat wave, or the heat wave preventing me from baking these!

  15. Coffeetococktails

    oh.my.goodness. These complete me. I cannot WAIT to try these this upcoming weekend (if I can wait that long). Thank you for this divine recipe!!!!

  16. Averie @ Love Veggies and Yoga

    Jenny these look AMAZING!

    And it’s sort of surreal. Just this weekend I made something and posted pics of it to my blog as sort of a teaser (haven’t posted the full recipe) but I posted pics of it on Saturday..anyway the things I used: yellow cake, sweetened condensed milk, white choc chips, and marshmallow creme were all in it. The SAME things in this recipe of yours.

    I think we were living a parallel kitchen life or something! Crazy!

    Your bars look….SO GOOD!!!! When I saw the teaser pic on instagram, I about peed my pants 🙂

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