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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  • Oven


  • 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


  • 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.


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


Have a great new week, come back soon!

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  2. Michele

    My daughter made these for all of us who were watching our favorite college football game last week and I thought I died and went to heaven – they are SO GOOD!

    So tonight I made her tell me where to find the recipe…and now I am going to make them. They are the perfect party snack. Thanks so much!

    Have you ever changed up the recipe at all? I wonder how they’d stick together if I were to use condensed milk verses SWEETENED condensed milk, and a tiny less marshmallows and white chocolate? They are super rich and super super sweet – have you ever tried making them any less sweet?

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  4. Suzanne

    These were amazing. Seriously a new favorite. I made them for Easter and everyone swooned. One suggestion…don’t mix with your hands unless you want a crazy mess. Thanks for the recipe!

  5. ari

    Is there any way to do it without the eggs? This looks absolutely delicious, but I don’t eat eggs and unfortunately can’t enjoy. 🙁

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