Chaos Cake Monster Muffin Loaf

Featured in: Sweet Cravings

This vibrant loaf blends everything fun about muffins and cake into a monster-sized treat. Starting with a tender, buttery base, it's mixed with chocolate chips, rainbow sprinkles, nuts, and marshmallows for a burst of flavor. A swirl of creamy peanut butter runs throughout, creating gooey pockets that complement the soft crumb. Easy to make, this loaf is perfect for sharing, offering a mix of textures from crunchy nuts to melty chocolate and pillowy marshmallow. Serve warm for the ultimate colorful dessert experience that delights kids and adults alike.

Updated on Thu, 30 Oct 2025 14:27:00 GMT
A vibrant Chaos Cake Monster Muffin Loaf topped with colorful sprinkles and chocolate chips.  Save
A vibrant Chaos Cake Monster Muffin Loaf topped with colorful sprinkles and chocolate chips. | crumbnest.com

A wildly fun, colorful loaf blending the best of muffins and cake, packed with chocolate chips, sprinkles, and a swirl of peanut butter for a monster-sized treat.

The first time I made this loaf, my kids were amazed by its colorful swirls and gooey texture. It quickly became a favorite at our birthday parties and celebratory breakfasts.

Ingredients

  • All-purpose flour: 2 cups (250 g)
  • Baking powder: 1 ½ tsp
  • Baking soda: ½ tsp
  • Salt: ½ tsp
  • Cinnamon (optional): 1 tsp
  • Unsalted butter, melted and slightly cooled: ½ cup (115 g)
  • Granulated sugar: 1 cup (200 g)
  • Eggs: 2 large
  • Whole milk or buttermilk: 1 cup (240 ml)
  • Vanilla extract: 1 tsp
  • Mini chocolate chips: ½ cup (90 g)
  • Rainbow sprinkles: ½ cup (80 g)
  • Creamy peanut butter: ⅓ cup (85 g)
  • Chopped walnuts or pecans (optional): ½ cup (70 g)
  • Mini marshmallows: ½ cup (90 g)

Instructions

Prepare loaf pan:
Preheat oven to 350°F (175°C). Grease and line a 9x5-inch (23x13 cm) loaf pan with parchment paper.
Mix dry ingredients:
In a large bowl, whisk together flour, baking powder, baking soda, salt, and cinnamon.
Mix wet ingredients:
In a separate bowl, whisk the melted butter and sugar until well combined. Add eggs, one at a time, beating well after each. Stir in milk and vanilla extract.
Combine batter:
Pour the wet ingredients into the dry ingredients and mix until just combined. Do not overmix.
Add mix-ins:
Gently fold in chocolate chips, sprinkles, nuts (if using), and marshmallows.
Batter layering:
Pour half the batter into the prepared loaf pan. Dollop half the peanut butter over the batter and swirl gently with a knife. Add the remaining batter and repeat with the rest of the peanut butter, swirling again.
Bake:
Bake for 50–55 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs.
Cool:
Cool in the pan for 15 minutes, then transfer to a wire rack to cool completely before slicing.
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My family loves slicing into the loaf while it’s still a little warm and searching for the extra gooey marshmallow pockets. It’s the highlight of our weekend brunches!

Required Tools

Mixing bowls, whisk, 9x5-inch loaf pan, parchment paper, measuring cups and spoons, spatula, knife (for swirling).

Allergen Information

Contains: Wheat (gluten), eggs, milk, peanuts (or tree nuts if using walnuts or pecans), and possible soy (in chocolate chips).

Nutritional Information

Calories: 325, Total Fat: 15 g, Carbohydrates: 43 g, Protein: 5 g per serving.

Deliciously gooey Chaos Cake Monster Muffin Loaf with swirls of creamy peanut butter.  Save
Deliciously gooey Chaos Cake Monster Muffin Loaf with swirls of creamy peanut butter. | crumbnest.com

Enjoy this Chaos Cake Monster Muffin Loaf slightly warm for ultimate gooey goodness. Each slice is sure to brighten any day!

Recipe FAQ

Can I make it nut-free?

Absolutely! Skip nuts and use sunflower seed butter instead of peanut butter for a nut-free treat.

What can I use instead of chocolate chips?

Try white chocolate or butterscotch chips for different flavor twists in this colorful loaf.

How do I achieve gooey marshmallow pockets?

Serve the loaf slightly warm so the marshmallows melt, creating delicious gooey bites.

Can I use oil instead of butter?

Yes, substitute melted butter with an equal amount of neutral oil for a slightly different texture.

Is this suitable for vegetarians?

Yes, all ingredients listed fit a vegetarian diet. Always verify marshmallow and sprinkle brands for additives.

What pan size should I use?

A 9x5-inch loaf pan works best to achieve the proper rise and soft interior.

Chaos Cake Monster Muffin Loaf

Whimsical loaf swirled with peanut butter, packed with chocolate chips, sprinkles, nuts, and gooey marshmallows.

Prep duration
20 min
Cook duration
55 min
Complete duration
75 min
Created by Chloe Martin


Skill Level Easy

Heritage American

Output 10 Portions

Dietary considerations Meat-Free

Components

Dry Ingredients

01 2 cups all-purpose flour
02 1 ½ teaspoons baking powder
03 ½ teaspoon baking soda
04 ½ teaspoon salt
05 1 teaspoon cinnamon (optional)

Wet Ingredients

01 ½ cup unsalted butter, melted and cooled
02 1 cup granulated sugar
03 2 large eggs
04 1 cup whole milk or buttermilk
05 1 teaspoon vanilla extract

Fun Mix-ins

01 ½ cup mini chocolate chips
02 ½ cup rainbow sprinkles
03 ⅓ cup creamy peanut butter
04 ½ cup chopped walnuts or pecans (optional)
05 ½ cup mini marshmallows

Directions

Phase 01

Prepare Baking Pan and Oven: Preheat oven to 350°F. Grease a 9x5-inch loaf pan and line with parchment paper.

Phase 02

Combine Dry Ingredients: In a large bowl, whisk together flour, baking powder, baking soda, salt, and cinnamon.

Phase 03

Mix Wet Ingredients: In a separate bowl, blend melted butter and sugar until smooth. Add eggs one at a time, mixing thoroughly after each addition. Stir in milk and vanilla extract.

Phase 04

Incorporate Wet with Dry: Pour wet mixture into dry ingredients and stir gently until just combined. Do not overmix.

Phase 05

Fold in Mix-ins: Carefully fold in chocolate chips, rainbow sprinkles, marshmallows, and nuts if desired.

Phase 06

Layer Batter and Swirl Peanut Butter: Spread half of the batter into the prepared pan. Dollop half of the peanut butter on top and gently swirl with a knife. Repeat with remaining batter and peanut butter, swirling again.

Phase 07

Bake Until Set: Bake 50 to 55 minutes, or until a toothpick inserted in the center comes out with moist crumbs.

Phase 08

Cool and Slice: Allow loaf to cool in the pan for 15 minutes. Transfer to a wire rack and cool completely before slicing.

Tools needed

  • Mixing bowls
  • Whisk
  • 9x5-inch loaf pan
  • Parchment paper
  • Measuring cups and spoons
  • Spatula
  • Knife

Allergy details

Review each component for potential allergens and seek medical guidance if you're uncertain about ingredients.
  • Contains wheat (gluten), eggs, milk, and peanuts. Nuts or tree nuts may be present if using walnuts or pecans. Chocolate chips may contain soy. Always check labels for allergen safety.

Nutritional information (each portion)

These values are approximate guides only and shouldn't replace professional medical consultation.
  • Energy: 325
  • Fats: 15 g
  • Carbohydrates: 43 g
  • Proteins: 5 g