Go Back
cookie monster cake

cookie monster cake

This Cookie Monster Cake is a fun and adorable cake inspired by the beloved blue, cookie-loving character! Made with fluffy vanilla or chocolate cake layers, covered in vibrant blue frosting, and topped with chocolate chip cookies, it's a perfect treat for birthdays and special occasions.
Print Recipe Pin Recipe
Prep Time 30 minutes
Cook Time 35 minutes
Rest time 1 hour
Total Time 2 hours 5 minutes
Course Dessert
Cuisine American
Servings 11

Equipment

  • 2 (8-inch) round cake pans
  • Electric mixer
  • Mixing bowls –
  • Piping bag with grass/fur tip (Wilton #233)
  • Offset spatula
  • Cooling rack

Ingredients
  

For the Cake:

  • 2 ½ cups all-purpose flour
  • 2 ½ teaspoons baking powder
  • ½ teaspoon salt
  • 1 cup unsalted butter softened
  • 1 ¾ cups sugar
  • 4 large eggs room temperature
  • 1 tablespoon vanilla extract
  • 1 cup whole milk
  • ½ cup sour cream

For the Blue Frosting:

  • 2 cups unsalted butter softened
  • 6 cups powdered sugar
  • 2 teaspoons vanilla extract
  • 3-4 tablespoons heavy cream or milk
  • Blue gel food coloring for vibrant color

For Decoration:

  • 2 large white chocolate discs or fondant circles for eyes
  • 2 small chocolate chips for pupils
  • Chocolate chip cookies whole and crumbled
  • Black fondant optional, for mouth

Instructions
 

Step 1: Bake the Cake Layers

  • Preheat oven to 350°F (175°C). Grease and line two 8-inch cake pans.
  • In a bowl, whisk together flour, baking powder, and salt. Set aside.
  • In a large mixing bowl, beat butter and sugar until fluffy (about 2 minutes).
  • Add eggs one at a time, mixing well after each addition. Stir in vanilla extract.
  • Alternate adding dry ingredients and milk, mixing until smooth. Stir in sour cream.
  • Divide batter evenly between the cake pans.
  • Bake for 30-35 minutes, or until a toothpick inserted in the center comes out clean.
  • Let cakes cool in the pans for 10 minutes, then transfer to a wire rack to cool completely.

Step 2: Make the Blue Frosting

  • Beat butter until creamy. Gradually add powdered sugar and continue mixing.
  • Add vanilla extract and heavy cream, then beat until fluffy.
  • Mix in blue gel food coloring until you achieve a deep Cookie Monster blue.

Step 3: Assemble & Decorate

  • Level the cakes if necessary, then stack them with a layer of frosting in between.
  • Apply a crumb coat (thin frosting layer) and chill for 30 minutes.
  • Pipe fur texture using a grass/fur piping tip (Wilton #233), covering the entire cake.
  • Add eyes: Place white chocolate discs (or fondant circles) on the cake and attach chocolate chips as pupils.
  • Make the mouth: Use black fondant or pipe a black frosting mouth.
  • Decorate with cookies: Place whole and crumbled chocolate chip cookies around the cake and into the mouth.

Step 4: Serve & Enjoy!

  • Store leftovers in the fridge for up to 3 days in an airtight container.
  • Let the cake sit at room temperature for 30 minutes before serving.

Notes

  • Flavor Options: Swap vanilla cake for chocolate or cookies & cream flavor.
  • Frosting Alternative: Use whipped cream cheese frosting for a tangy twist.
  • Easy Version: Use a box cake mix and premade blue frosting for a quicker method.
Keyword Birthday Cake, blue cake, cookie monster cake, kids cake, sesame street cake