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Funfetti Cookie Cake

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A supersized chewy vanilla cookie filled with plenty of festive sprinkles and white chocolate chips and topped with frosting and more sprinkles. This funfetti cookie cake is what birthday dreams are made of.

sprinkle filled cookie cake with buttercream border and extra sprinkles for a funfetti style treat!

If you want a special treat for a birthday boy or girl who prefers cookies to cake, look no further. This super festive sprinkle filled birthday cookie cake screams party and is sure to delight your favorite cookie lover.

I cannot believe it took me so long to share this scrumptious party ready dessert with you. I actually made it for my sister-in-law’s birthday back in November.

large mixer bowl of cookie dough.

But December was chock full of Christmas posts and giveaways, so I am finally able to share it with you. It is definitely worth the wait!

When asked what her birthday treat request was she said sprinkles. 😃 I told her I could put sprinkles on just about anything so that would be easy enough.

cookie dough pressed into large scalloped edge tart pan.

When pressed she gave me vanilla and cookies to go on. So I figured a cookie cake filled with sprinkles would be just the thing.

The best part is how quick it was to make. The beauty of doing a cookie as bars or a cookie cake is you don’t have to put trayful after trayful of cookies in the oven.

There is just one trip to the oven and a delicious giant cookie emerges.

baked cookie with tons of sprinkles on top.

You just smoosh the dough into a pan and throw it in the oven! Plus that helps ensure a super chewy center. 😍

Just a little bit of crispy around the edge and perfect soft cookie goodness in the middle.

I used my 12″ tart pan because I was feeding a crowd and I think the scalloped edges are fun. But don’t worry if you don’t have one.

cookie pushed out of the pan with scalloped edges showing.

A 12″ oven safe skillet would work. Just make sure it’s deep enough. Otherwise you could bake it in two 9″ cake or pie pans. Even a 10×15″ pan or lasagna pan would work.

Of course I couldn’t have a birthday treat without frosting, so I piped on a quick border of sweetened condensed milk buttercream. Then another dusting of sprinkles really pulled it all together.

It is actually fitting that I had to wait until now to share this though as the blog is celebrating its 4th birthday! A lot has changed in those 4 years and it has been a fun ride.

close up of yellow buttercream border on top of cookie.

What started on a whim has become a creative outlet. It has also enabled me to meet and become friends with people from all over the world.

It will be fun to see where this year takes us. As always, I am open to suggestions.

But no matter what, I am sure there will be more frosting and sprinkles along the way!

slice of cookie cake on plate with fork.

Tips and Tricks for Making a Cookie Cake

Make sure to use jimmies in the cookie. Nonpareils will melt into the dough and make a brown mess.

Nonpareils are cute sprinkled on top though!

Using a couple of nine inch cake or pie pans will work if you don’t have a 12″ tart pan.

A 12″ cast iron skillet will also work great!

You can bake the cookie ahead of time and wrap it tightly in plastic wrap. Then freeze it until part day, then defrost and decorate. 

If you prefer chocolate chips, they would be fun too. White chips just better matched my sister-in-law’s vanilla request. 

This could easily be made into cookie bars and baked in a 9×13″ pan.

Slice of funfetti cookie cake with lots of sprinkles, white chocolate chips and a buttercream swirl border on plate, ready to eat.

More fun cookie cake ideas

Love this recipe? Give it a ⭐⭐⭐⭐⭐ review in the recipe card below!

sprinkle filled cookie cake with buttercream border and extra sprinkles for a funfetti style treat!

Funfetti Birthday Cookie Cake

Servings: 20 Servings
Author: Carlee
A supersized chewy vanilla cookie filled with plenty of festive sprinkles and white chocolate chips and topped with frosting and more sprinkles. This cookie cake is what birthday dreams are made of.
5 from 6 ratings
Prep Time 10 minutes
Cook Time 25 minutes
Total Time 35 minutes


  • 1 cup butter softened
  • cups granulated sugar
  • 3 large eggs
  • 2 teaspoons vanilla extract
  • 3 cups all-purpose flour
  • ½ teaspoon salt
  • 2 teaspoons baking powder
  • 1 teaspoon baking soda
  • 3 teaspoons cornstarch
  • 1 cup white chocolate chips
  • 1 cup jimmie style sprinkles
  • optional: additional sprinkles/nonpareils and buttercream for top


  • Preheat oven to 350°F and grease your pan. A 12-inch tart pan, a 9×13-inch pan, or 2 pie pans will work.) 
  • Cream together butter and sugar until light and fluffy.
    1 cup butter, 1½ cups granulated sugar
  • Beat in the eggs, one at a time, until well mixed. Stir in vanilla.
    3 large eggs, 2 teaspoons vanilla extract
  • In a mixing bowl, combine the flour, salt, baking powder, baking soda, and corn starch. Add the dry ingredients to the butter mixture and stir until just combined.
    3 cups all-purpose flour, ½ teaspoon salt, 2 teaspoons baking powder, 1 teaspoon baking soda, 3 teaspoons cornstarch
  • Fold in the white chips and jimmies, then press the dough into the prepared pan(s). Sprinkle additional jimmies or nonpareils on top if desired.
    1 cup white chocolate chips, 1 cup jimmie style sprinkles
  • Bake for about 25 minutes or until the edges are slightly golden and the center is set.
  • Cool completely before removing from pan. Pipe a buttercream border on if desired and top with more sprinkles!



Serving: 1ServingCalories: 321kcalCarbohydrates: 42gProtein: 3gFat: 16gSaturated Fat: 8gPolyunsaturated Fat: 6gCholesterol: 55mgSodium: 257mgFiber: 1gSugar: 26g

Nutritional Disclaimer

“Cooking With Carlee” is not a dietitian or nutritionist, and any nutritional information shared is an estimate. If calorie count and other nutritional values are important to you, we recommend running the ingredients through whichever online nutritional calculator you prefer. Calories and other nutritional values can vary quite a bit depending on which brands were used.

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Monday 21st of January 2019

Thank you!

Family Around the Table

Saturday 5th of January 2019

Congratulations on 4 years! This cake is the perfect way to celebrate!


Monday 21st of January 2019

Thank you!


Friday 4th of January 2019

Audrey hit the jackpot when she got you for a sister-in-law! You Nader her a perfect birthday treat!!


Monday 21st of January 2019

It was fun to do!

Andrea Nine

Friday 4th of January 2019

This looks so pretty and absolutely heavenly! I love that you could change up toppings and sprinkle colors. I bet your sister in law loved it so much! Happy Friday sweet friend!


Monday 21st of January 2019

You could definitely customize it according to the occasion. My sisinlaw is a yellow lover, so it was fun to frilly it up for her.