Chaos Cake Peanut Butter Bar

Featured in: Sweet Treats

Layers of moist chocolate base, creamy peanut butter, salty pretzel crunch, and luscious chocolate ganache come together in a truly decadent bar. Each bite delivers a perfect mix of textures and flavors: rich cake, smooth peanut butter, and a sweet-salty explosion of crunchy pretzels and roasted peanuts. Finished with a tangle of toppings, these bars are ideal for special occasions, celebrations, or anytime a deliciously chaotic dessert is called for.

Updated on Tue, 23 Sep 2025 06:45:25 GMT
Decadent, layered Chaos Cake Peanut Butter Pretzel Bar Tangle: a visual delight with chocolate, peanut butter, and pretzels. Save
Decadent, layered Chaos Cake Peanut Butter Pretzel Bar Tangle: a visual delight with chocolate, peanut butter, and pretzels. | ovenharmony.com

This decadent Chaos Cake Peanut Butter Pretzel Bar Tangle combines the comforting flavors of chocolate and peanut butter with the irresistible crunch of pretzels. I've been making these bars for years whenever I need a surefire crowd-pleaser that satisfies both sweet and salty cravings at once.

I first created these bars for my daughter's birthday when she couldn't decide between chocolate cake and peanut butter cups. The chaotic combination was such a hit that it's now requested at every family gathering.

Ingredients

  • All purpose flour: provides the perfect structure for our cake base. Look for unbleached varieties for best flavor
  • Granulated sugar: sweetens the cake without overpowering the other flavors
  • Unsweetened cocoa powder: gives rich chocolate flavor. Dutch processed works best here
  • Baking powder and baking soda: ensure the perfect rise and texture
  • Whole milk: adds moisture and richness to the cake layer
  • Vegetable oil: keeps the cake moist for days
  • Creamy peanut butter: creates the luscious middle layer. Choose a brand without added stabilizers for the smoothest texture
  • Mini pretzels: provide the signature crunch. The smaller size crushes more evenly than larger pretzels
  • Semisweet chocolate chips: melt beautifully for the ganache. Look for chips with at least 45% cocoa content
  • Heavy cream: gives the ganache its silky texture
  • Roasted peanuts: add texture contrast and amplify the peanut flavor. Lightly salted works perfectly here

Instructions

Prepare the pan:
Line your 8x8 baking pan with parchment paper, leaving overhang on all sides. This creates handles that will make removing the finished bars incredibly easy. A light spray of cooking oil under the parchment helps it stick to the pan while you work.
Mix the cake batter:
Whisk the dry ingredients thoroughly to eliminate any cocoa powder lumps before adding wet ingredients. When combining wet and dry components, mix just until no flour streaks remain. Overmixing will develop gluten and create a tough cake.
Bake the cake base:
Pour the batter into your prepared pan and smooth the top with an offset spatula. The cake layer should bake until just set about 20 minutes. A toothpick inserted in the center should come out with a few moist crumbs but no wet batter. Cool completely before adding toppings.
Create the peanut butter layer:
Beat the peanut butter, powdered sugar and softened butter until completely smooth and fluffy. This mixture should spread easily but still hold its shape. If too stiff, add a tablespoon of milk. Spread this evenly over the cooled cake using an offset spatula.
Assemble the pretzel crunch:
Crush pretzels to varying sizes for texture interest. Some pieces should be fine crumbs while others remain chunky. Toss with melted butter and brown sugar until evenly coated. This mixture adds the perfect salty crunch contrast to the creamy layers.
Make the ganache:
Heat cream until steaming but not boiling. Pour over chocolate chips and let sit undisturbed for a full minute. This allows the chocolate to begin melting evenly. When you stir, start from the center and work outward in concentric circles for the smoothest result.
Add the tangle toppings:
Arrange your toppings with creative abandon. The beauty of this dessert is in its chaotic appearance. Drizzle caramel in a zigzag pattern, scatter nuts and mini chips randomly, and place whole pretzels strategically for visual impact and textural contrast.
Imagine the textures of the Chaos Cake Peanut Butter Pretzel Bar Tangle: crunchy pretzels and creamy peanut butter delight. Save
Imagine the textures of the Chaos Cake Peanut Butter Pretzel Bar Tangle: crunchy pretzels and creamy peanut butter delight. | ovenharmony.com

The peanut butter layer is truly the heart of this recipe. I discovered that adding just a touch of powdered sugar rather than a full cup keeps the peanut butter flavor prominent while providing enough structure to support the toppings. My husband claims he could eat just this layer with a spoon and be perfectly content.

Storage Tips

These bars actually improve after a day in the refrigerator as the flavors meld together. Store them in an airtight container with parchment paper between layers to prevent sticking. They'll keep perfectly for up to 5 days refrigerated, though they rarely last that long in my house.

For longer storage, these bars freeze exceptionally well. Cut them into individual portions, wrap each in plastic wrap, then store in a freezer bag. Thaw in the refrigerator overnight or at room temperature for about an hour before serving.

Allergen Adaptations

This recipe can be adapted for various dietary needs with a few simple swaps. For a dairy free version, use plant based milk, butter alternatives, and dairy free chocolate chips. The texture will be slightly different but still delicious.

For gluten sensitivities, substitute gluten free flour blend with xanthan gum and use gluten free pretzels. The cake may be slightly more dense but the flavor combination remains fantastic.

Those with peanut allergies can enjoy a variation using almond butter or sunflower seed butter and substitute chopped almonds or sunflower seeds for the peanut topping.

Serving Suggestions

These indulgent bars deserve a special presentation. Serve slightly chilled rather than straight from the refrigerator to allow the flavors to fully bloom. A light dusting of cocoa powder or powdered sugar just before serving adds an elegant touch.

For an elevated dessert experience, warm individual bars for 10 seconds in the microwave and serve with a scoop of vanilla ice cream. The contrast between warm bar and cold ice cream creates a sensory delight that guests will remember.

These bars also make excellent gifts. Wrap individual portions in parchment paper tied with baker's twine for a thoughtful homemade treat that travels well.

This image shows a finished Chaos Cake Peanut Butter Pretzel Bar Tangle, ready to serve: sweet, salty, and so delicious. Save
This image shows a finished Chaos Cake Peanut Butter Pretzel Bar Tangle, ready to serve: sweet, salty, and so delicious. | ovenharmony.com

Success Stories

I've shared this recipe with countless friends who report back with rave reviews. One friend made these for a bake sale fundraiser and they sold out within minutes. Another adapted the recipe into mini cupcake form for her daughter's classroom birthday celebration, creating individual servings that delighted both children and teachers.

The most satisfying feedback came from my mother in law, who has been perfecting her dessert recipes for over 40 years. After trying these bars, she immediately asked for the recipe and now makes them regularly for her bridge club gatherings.

Recipe FAQ

How can I make these bars nut-free?

Replace peanut butter with sunflower seed butter and omit peanuts in the topping to avoid nuts.

Do the bars need to be refrigerated?

Refrigeration helps them set and makes slicing cleaner, but bars can be served chilled or at room temperature.

Can I substitute a different chocolate?

Yes, use milk or dark chocolate chips in place of semisweet for the ganache to adjust sweetness and flavor.

How do I keep the pretzel layer crunchy?

Press the pretzel crunch layer lightly and add toppings just before serving for best texture.

What can I use instead of pretzels?

Try salted crackers or crispy rice cereal for a similar salty crunch in the layered bars.

Chaos Cake Peanut Butter Bar

Decadent bars layered with chocolate, peanut butter, pretzels, and sweet-salty toppings.

Prep duration
25 min
Cook duration
30 min
Complete duration
55 min
Created by Claire Johnson

Classification Sweet Treats

Complexity Medium

Heritage American

Output 12 Portions

Dietary considerations Meat-free

Components

Cake Base

01 1 1/4 cups all-purpose flour
02 1/2 cup granulated sugar
03 1/4 cup unsweetened cocoa powder
04 1/2 teaspoon baking powder
05 1/4 teaspoon baking soda
06 1/4 teaspoon salt
07 1/2 cup whole milk
08 1/4 cup vegetable oil
09 1 large egg
10 1 teaspoon vanilla extract

Peanut Butter Layer

01 3/4 cup creamy peanut butter
02 1/4 cup powdered sugar
03 2 tablespoons unsalted butter, softened

Pretzel Crunch

01 1 1/2 cups mini pretzels, coarsely crushed
02 2 tablespoons unsalted butter, melted
03 2 tablespoons light brown sugar

Chocolate Ganache

01 1/2 cup semisweet chocolate chips
02 1/4 cup heavy cream

Tangle Toppings

01 1/4 cup roasted peanuts, roughly chopped
02 2 tablespoons mini chocolate chips
03 2 tablespoons caramel sauce (optional)
04 Extra pretzel twists, for garnish

Directions

Phase 01

Preheat and Prepare Pan: Preheat your oven to 350°F (175°C). Line an 8x8-inch (20x20 cm) baking pan with parchment paper, ensuring there's enough overhang for easy removal.

Phase 02

Combine Dry Base Ingredients: In a spacious bowl, whisk together the all-purpose flour, granulated sugar, cocoa powder, baking powder, baking soda, and salt.

Phase 03

Integrate Wet and Dry Base Ingredients: Add the whole milk, vegetable oil, large egg, and vanilla extract to the dry components. Whisk until just combined and a smooth batter forms.

Phase 04

Bake and Cool Cake Base: Pour the batter into the prepared baking pan, smoothing the surface. Bake for 18–22 minutes, or until a toothpick inserted into the center emerges clean. Allow the cake base to cool completely.

Phase 05

Prepare Peanut Butter Layer: In a medium bowl, cream together the creamy peanut butter, powdered sugar, and softened unsalted butter until achieving a smooth consistency. Spread this mixture evenly over the cooled cake base.

Phase 06

Create Pretzel Crunch: For the pretzel crunch, combine the coarsely crushed mini pretzels with the melted unsalted butter and light brown sugar. Distribute this mixture evenly over the peanut butter layer and press down gently.

Phase 07

Make and Apply Chocolate Ganache: To prepare the ganache, heat the heavy cream until it becomes steaming. Pour the hot cream over the semisweet chocolate chips and let it sit for one minute. Stir until the chocolate is completely melted and the ganache is smooth. Drizzle this ganache over the pretzel layer.

Phase 08

Add Tangle Toppings: Scatter the roughly chopped roasted peanuts, mini chocolate chips, and extra pretzel twists over the top. If using, drizzle the caramel sauce.

Phase 09

Chill and Serve: Refrigerate the bars for a minimum of 30 minutes to allow them to set. Carefully lift the bars from the pan using the parchment paper overhang. Slice into desired portions and serve chilled or at room temperature.

Necessary tools

  • 8x8-inch baking pan
  • Mixing bowls
  • Whisk
  • Electric mixer (optional)
  • Saucepan or microwave
  • Spatula

Allergy details

Review each component for potential allergens and consult healthcare professionals if you're unsure about ingredients.
  • Contains peanuts, wheat (gluten), milk, eggs, and soy (in chocolate chips).
  • Always verify ingredient labels for potential allergens if you have dietary restrictions.

Nutritional information (each portion)

These values are approximate guidelines only and shouldn't replace professional medical guidance.
  • Energy: 340
  • Fats: 20 g
  • Carbohydrates: 36 g
  • Proteins: 7 g