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A Cookie Monster Cake with blue buttercream frosting, large candy eyes, and a cookie mouth on a white cake stand, surrounded by party decorations.

Best Cookie Monster Cake Magic For Fun And Smiles

Jordan Mike
Make a fun and delicious Cookie Monster Cake with moist layers, rich blue buttercream, and cookie toppings. Perfect for birthdays and themed parties.
Prep Time 30 minutes
Cook Time 30 minutes
Total Time 1 hour
Course Dessert
Cuisine American
Servings 12 slices
Calories 450 kcal

Ingredients
  

2 ½ cups all-purpose flour (for a light, airy texture)

  • 2 ½ teaspoons baking powder helps the cake rise evenly

½ teaspoon salt (balances the sweetness)

  • 1 cup unsalted butter softened (adds richness and moisture)

2 cups granulated sugar (creates a soft crumb)

  • 4 large eggs room temperature (helps bind the batter for a fluffy texture)

1 tablespoon vanilla extract (enhances the flavor)

  • 1 cup whole milk adds moisture

For the Cookie Monster Blue Buttercream Frosting

1 cup unsalted butter, softened (for a creamy, rich consistency)

  • 4 cups powdered sugar adds sweetness and structure

2 tablespoons heavy cream (for a smooth, spreadable texture)

  • 1 tablespoon vanilla extract enhances depth of flavor

Blue gel food coloring (use sparingly for a vibrant, Cookie Monster shade)

  • For Decoration and Cookie Topping
  • Oreo cookies for the mouth and texture

Chocolate chip cookies, crumbled (to give Cookie Monster his signature cookie-loving look)

  • Edible candy eyes or DIY fondant eyes for an authentic character design

Instructions
 

Step 1: Prepare the Cake Batter

  • Preheat your oven to 350°F (175°C). Grease and flour two 8-inch round cake pans to prevent sticking. You can also line them with parchment paper for easier removal.
  • Mix the dry ingredients – In a medium bowl, whisk together flour, baking powder, and salt. Set aside.
  • Cream the butter and sugar – In a large mixing bowl, beat the softened butter and granulated sugar with an electric mixer on medium speed until light and fluffy, about 2-3 minutes. This step ensures a soft, tender crumb.
  • Incorporate the eggs and vanilla – Add the eggs one at a time, mixing well after each addition. Stir in the vanilla extract for enhanced flavor.
  • Alternate adding the flour and milk – Reduce the mixer speed to low and add the flour mixture in three parts, alternating with the milk. Start and end with the dry ingredients. Mix until just combined to avoid overmixing.
  • Divide and bake – Evenly distribute the batter between the prepared cake pans. Smooth the tops and bake for 25-30 minutes, or until a toothpick inserted in the center comes out clean.
  • Cool the cakes – Let the cakes rest in the pans for 10 minutes, then transfer them to a wire rack to cool completely before frosting.

Step 2: Make the Blue Buttercream Frosting

  • Beat the butter – In a large bowl, whip the softened butter on medium-high speed for 2-3 minutes until creamy and smooth.
  • Add powdered sugar – Gradually mix in the powdered sugar, one cup at a time, to prevent clumping.
  • Incorporate heavy cream and vanilla – Pour in the heavy cream and vanilla extract, then continue beating until fluffy and spreadable.
  • Tint the frosting blue – Add a small amount of blue gel food coloring at a time, mixing well after each addition until you reach the perfect Cookie Monster shade.

Step 3: Assemble and Decorate

  • Level the cake layers – If your cakes have domed tops, use a serrated knife to level them for an even, professional finish.
  • Apply the crumb coat – Spread a thin layer of frosting over the cake to seal in crumbs. Chill in the fridge for 15-20 minutes before applying the final coat.
  • Frost the cake completely – Use an offset spatula to evenly coat the entire cake with the blue buttercream, making it as fluffy as Cookie Monster’s fur.
  • Create the texture – To mimic Cookie Monster’s furry look, use a fork or a piping bag fitted with a grass tip to add texture.
  • Add the eyes – Place two large candy eyes or fondant circles on top of the cake. For the classic Cookie Monster look, position them slightly uneven for a playful effect.
  • Make the cookie mouth – Cut an Oreo cookie in half and press it into the frosting where Cookie Monster’s mouth should be. Crumble additional cookies around the cake for a fun, “messy” cookie-eating effect.

Step 4: Final Touches and Serving

  • Chill the cake for 20 minutes to allow the frosting to set before serving.
  • Slice and enjoy – Serve with a glass of milk for the ultimate cookie-loving experience.

Notes

Nutrition Information (Per Serving)

  • Calories: 450 kcal
  • Total Fat: 22g
  • Saturated Fat: 13g
  • Cholesterol: 95mg
  • Sodium: 210mg
  • Carbohydrates: 58g
  • Fiber: 1g
  • Sugar: 42g
  • Protein: 5g

Recipe Category & Tags

  • Course: Dessert
  • Cuisine: American
  • Diet: Vegetarian
  • Method: Baking
  • Keyword: Cookie Monster Cake, Cookie Monster Birthday Cake, Blue Frosting Cake, Kids Party Cake, Fun Themed Cake
  • Skill Level: Beginner to Intermediate
Keyword Blue Frosting Cake, Cookie Monster Birthday Cake, Cookie Monster Cake, Kids Party Cake