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Top down view of Crumbl birthday cake cookie copycat.

Copycat Crumbl Cookies Birthday Cake

Copycat Crumbl birthday cake cookies are a great way to have Crumbl cookies without having ot leave home. They are a Funfetti like cookie and so soft and delicious.
5 from 1 vote
Prep Time 8 minutes
Cook Time 14 minutes
23 minutes
Total Time 45 minutes
Course Dessert
Servings 8 cookies
Calories 547 kcal


  • Hand or Stand Mixer
  • Mixing bowls and spoons
  • Large cookie scooper (3 tbsp capacity)
  • Baking Sheets lined with parchment paper
  • Piping Bag fitted with tip 10 or 12


  • ½ cup butter softened
  • cup granulated sugar
  • ¾ cup powdered sugar
  • 1 egg brought to room temperature* see notes
  • 2 teaspoon pure vanilla extract
  • 1.5 cup all purpose flour scooped and leveled
  • ¼ teaspoon salt
  • 1 teaspoon baking powder
  • ½ cup rainbow sprinkles for rolling

Cake batter flavored buttercream

  • ½ cup butter softened
  • ½ teaspoon cake batter flavoring
  • 2 cup powdered sugar
  • 2-3 tablespoon heavy cream


  • Place the egg in a bowl of warm water for 5 mins (to bring it to room temperature)
  • Preheat the oven to 350F then line a baking sheet with parchment paper and set it aside.
  • Cream the butter, granulated sugar, and powdered sugar together until smooth and creamy.
  • Remove the egg from the bowl of warm water, crack it and beat it and the vanilla extract until combined.
  • Add in the dry ingredients (flour, baking powder and salt) and mix until just combined.
  • Use a large cookie scoop and scoop out 8 equally sized cookie dough balls.
  • Roll the dough into balls and then roll the balls in the sprinkles.
  • Flatten the cookies to ¾ inch thickness
  • Bake for 12-13 min until lightly golden on the edges
  • Remove from the oven and let sit on the baking sheets for at least ten min before removing to a cooling rack to fully cool down.

Make the cake flavored buttercream

  • Using a hand or stand mixer, cream the butter until smooth.
  • Add powdered sugar, cake batter extract and heavy cream.
  • Beat for 2 mins on low speed and beat on HIGH for 4 mins creating a very light and fluffy buttercream.


  • Add the frosting to a piping bag fitted with a Tip 10 or 12
  • Starting in the center of the cookie, pipe a dot and then make a tight circle around it. Continue this until the cookie is fully frosted. Immediately top with sprinkles.


Can be stored in an air tight container in the fridge


Serving: 1gCalories: 547kcalCarbohydrates: 77gProtein: 3gFat: 26gSaturated Fat: 16gPolyunsaturated Fat: 1gMonounsaturated Fat: 7gTrans Fat: 1gCholesterol: 86mgSodium: 318mgPotassium: 46mgFiber: 1gSugar: 58gVitamin A: 794IUVitamin C: 1mgCalcium: 46mgIron: 1mg
Keyword cookies, copycat crumbl cookies
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