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Side view of white chocolate smores bars on a counter with min marshmallows
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5 from 3 votes

White Chocolate S’mores Gooey Cake Bars

White Chocolate S’mores Bars ~ The Ultimate Treat! These Gooey Cake Bars are a Delicious Twist on a S'mores Bar! 
Prep Time20 mins
Cook Time30 mins
Total Time50 mins
Course: Dessert
Cuisine: American
Servings: 12 bars
Calories: 381kcal
Author: Julie Evink


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


  • Preheat oven to 350 degrees F. and line an 8×8 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.
  • Place cake mix, egg, and butter into a large mixing bowl. Mix 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. You might want to go a little light on this as mine had to much and was a bit runny even when the bars were done.
  • 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.


Serving: 1 | Calories: 381kcal | Carbohydrates: 67g | Protein: 4g | Fat: 10g | Saturated Fat: 6g | Cholesterol: 22mg | Sodium: 397mg | Potassium: 149mg | Sugar: 45g | Vitamin A: 60IU | Vitamin C: 0.4mg | Calcium: 180mg | Iron: 1.3mg