Chaos Cake Smores Cookie Bars

Featured in: Sweet Crunch

Chaos Cake Smores Cookie Bars fuse gooey marshmallows, chocolate chips, and graham crackers between rich cookie dough layers for a playful dessert. The bars bake up golden and soft, with pockets of melted marshmallow and chocolate throughout. Enjoy these whimsical treats warm or cooled, paired with milk or coffee. Customize the bars by swapping dark chocolate or adding peanut butter cups. Their chewy layers and classic campfire twist make them an irresistible choice for gatherings or as a sweet indulgence at home.

Updated on Thu, 30 Oct 2025 08:46:00 GMT
Decadent Chaos Cake S'mores Cookie Bars topped with chocolate and gooey marshmallows. Save
Decadent Chaos Cake S'mores Cookie Bars topped with chocolate and gooey marshmallows. | kookycrunch.com

A decadent, multi-layered dessert bar that brings together chocolate chip cookie dough, graham crackers, gooey marshmallows, and rich chocolate for the ultimate campfire-inspired treat. Each bite is chaotic, sweet, and bursting with nostalgic flavor.

I first experimented with these bars for a weekend get-together, mixing all my favorite smores and cookie ingredients on a whim. The result was an instant crowd-pleaser, with everyone asking for seconds and the recipe!

Ingredients

  • Unsalted butter (1 cup/225 g): Softened for easy creaming
  • Light brown sugar (1 cup/200 g): Packed for chewy texture
  • Granulated sugar (1/2 cup/100 g): Adds sweetness and structure
  • Eggs (2 large): Provide richness and binding
  • Vanilla extract (2 tsp): For depth of flavor
  • All-purpose flour (2 1/2 cups/315 g): Structure for the bars
  • Baking soda (1 tsp): Helps the bars rise
  • Salt (1/2 tsp): Balances sweetness
  • Semisweet chocolate chips (2 cups/340 g): Chocolatey bursts throughout
  • Graham crackers (8 full sheets): Create a signature smores layer
  • Mini marshmallows (2 cups/100 g): Gooey smores element
  • Milk chocolate bars (8 oz/225 g): Broken into pieces for an extra melty layer
  • Chocolate chips for topping (1/2 cup/85 g): Extra chocolate on top
  • Mini marshmallows for topping (1/2 cup/25 g): Extra gooeyness
  • Crushed graham cracker (1 sheet): Crunchy topping finish

Instructions

Prepare the pan:
Preheat oven to 350°F (175°C). Line a 9x13-inch (23x33 cm) baking pan with parchment paper, leaving an overhang for easy removal
Cream ingredients:
In a large bowl, cream together unsalted butter, light brown sugar, and granulated sugar until light and fluffy
Add eggs and vanilla:
Beat in eggs one at a time, then add vanilla extract
Combine dry ingredients:
In a separate bowl, whisk together all-purpose flour, baking soda, and salt
Mix dough:
Gradually add dry ingredients to wet, mixing until just combined
Stir in chocolate chips:
Fold in semisweet chocolate chips
Layer cookie dough:
Press half the cookie dough evenly into the pan
Add smores layers:
Arrange graham crackers in a single layer, then sprinkle mini marshmallows and milk chocolate bar pieces over top
Top with remaining dough and extras:
Drop spoonfuls of remaining cookie dough, gently spread, then sprinkle with additional chocolate chips, mini marshmallows, and crushed graham cracker
Bake:
Bake for 28–32 minutes, or until golden brown and set, with slightly gooey center
Cool and cut:
Cool completely in pan, then lift out and cut into bars
Save
| kookycrunch.com

Sharing these bars with my family always leads to lots of laughter and sticky fingers, especially when the marshmallow stretches in every bite. It's now a requested treat for all our busy weekends and birthday parties!

Required Tools

9x13-inch (23x33 cm) baking pan, parchment paper, mixing bowls, electric mixer or whisk, rubber spatula, measuring cups and spoons

Allergen Information

Contains: Wheat (gluten), eggs, milk, soy (in chocolate). May contain nuts if using peanut butter cups or based on chocolate brands. Always check ingredient labels for possible cross-contamination

Nutritional Information (per serving)

Calories: 370, Total Fat: 17 g, Carbohydrates: 52 g, Protein: 3 g

Layered Chaos Cake S'mores Cookie Bars, showcasing rich chocolate, graham crackers, and marshmallows. Save
Layered Chaos Cake S'mores Cookie Bars, showcasing rich chocolate, graham crackers, and marshmallows. | kookycrunch.com

Enjoy these Chaos Cake Smores Cookie Bars fresh from the pan, with cold milk or coffee for the ultimate dessert experience. They disappear fast, so hide an extra piece for yourself!

Recipe FAQ

Can I substitute dark chocolate instead of milk chocolate?

Yes, dark chocolate can be used for a richer flavor profile. Adjust quantity to taste.

How do I achieve extra gooey bars?

Serve the bars slightly warm or add extra marshmallows just before baking for even more gooeyness.

Is it possible to add nuts or peanut butter?

Yes, you can layer peanut butter cups or sprinkle chopped nuts for added texture and nutty flavor.

How do I ensure easy removal from the pan?

Line the pan with parchment paper, leaving an overhang. Cool completely before lifting out and slicing.

Can this dessert be made ahead of time?

Yes, the bars keep well in an airtight container for several days. They remain soft and chewy.

Are these suitable for vegetarians?

Yes, the bars use vegetarian ingredients, but check chocolate and marshmallow labels for additives.

Chaos Cake Smores Cookie Bars

Cookie bars packed with chocolate, graham crackers, marshmallows, and a campfire-inspired twist.

Prep duration
20 min
Cook duration
30 min
Complete duration
50 min
Created by Jake Peterson


Skill level Medium

Heritage American

Output 16 Portions

Diet considerations Meat-free

Components

Cookie Dough Layer

01 1 cup unsalted butter, softened
02 1 cup light brown sugar, packed
03 1/2 cup granulated sugar
04 2 large eggs
05 2 teaspoons vanilla extract
06 2 1/2 cups all-purpose flour
07 1 teaspoon baking soda
08 1/2 teaspoon salt
09 2 cups semisweet chocolate chips

Smores Layers

01 8 full sheets graham crackers
02 2 cups mini marshmallows
03 8 ounces milk chocolate bars, broken into pieces

Topping

01 1/2 cup chocolate chips
02 1/2 cup mini marshmallows
03 1 graham cracker, crushed

Directions

Phase 01

Prepare Baking Pan: Preheat oven to 350°F. Line a 9x13-inch baking pan with parchment paper, leaving an overhang for easy removal.

Phase 02

Cream Butter and Sugars: In a large bowl, blend unsalted butter, light brown sugar, and granulated sugar until mixture is light and fluffy.

Phase 03

Add Eggs and Vanilla: Incorporate eggs one at a time into the creamed mixture, then mix in vanilla extract until fully combined.

Phase 04

Combine Dry Ingredients: In a separate bowl, whisk together all-purpose flour, baking soda, and salt until evenly distributed.

Phase 05

Integrate Wet and Dry: Gradually blend dry ingredients into the wet mixture, mixing just until combined to avoid overworking the dough.

Phase 06

Fold in Chocolate Chips: Stir in semisweet chocolate chips until evenly incorporated throughout the dough.

Phase 07

Assemble Cookie Layer: Press half of the cookie dough evenly into prepared pan, creating a uniform bottom layer.

Phase 08

Arrange Graham Crackers: Lay graham crackers in a single layer over cookie dough, breaking as necessary to fully cover the surface.

Phase 09

Add Marshmallows and Chocolate Bars: Sprinkle 2 cups mini marshmallows and broken milk chocolate bar pieces evenly over graham crackers.

Phase 10

Top with Remaining Dough: Drop remaining cookie dough in spoonfuls over the marshmallow and chocolate layer, gently spreading to cover as much as possible.

Phase 11

Finish with Toppings: Sprinkle with extra chocolate chips, mini marshmallows, and crushed graham cracker for enhanced texture.

Phase 12

Bake: Place pan in oven and bake for 28–32 minutes until set and golden brown; the center should remain slightly gooey.

Phase 13

Cool and Portion: Allow bars to cool fully in the pan before using parchment overhang to lift out; cut into 16 equal squares for serving.

Necessary tools

  • 9x13-inch baking pan
  • Parchment paper
  • Two mixing bowls
  • Electric mixer or whisk
  • Rubber spatula
  • Measuring cups and spoons

Allergy details

Review each component carefully for potential allergens and consult with healthcare professionals if you're uncertain about any ingredient.
  • Contains wheat (gluten), eggs, milk, and soy. May contain nuts if peanut butter cups or certain chocolates are used.

Nutrient breakdown (per portion)

These values are estimates only and shouldn't replace professional medical guidance.
  • Energy: 370
  • Fats: 17 g
  • Carbohydrates: 52 g
  • Proteins: 3 g