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    Home » Recipes » Cakes

    Funfetti Cookie Cake

    Published: March 28, 2020 | Last Modified: August 9, 2022 by Gail Ng | Leave a Comment

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    Cookie cake with the word "yay" piped in buttercream
    A slice of cookie cake on a plate
    A slice of cookie cake on a plate
    Cookie cake with the word "yay" piped in buttercream

    Celebrate a birthday, special occasion, or "just because" with a funfetti cookie cake with vanilla buttercream frosting. How can you turn down what is essentially a giant, deep-dish cookie filled with rainbow sprinkles?

    A slice of cookie cake on a plate

    I had too much fun making this funfetti cookie cake. I mean, just looking at those colourful sprinkles lifts my mood. This cake is dense and chewy like a thick cookie while looking like a cake that you can decorate with fun piped frosting and slice it to share with others.

    Cookie cake with the word "yay" piped in buttercream

    How to make a funfetti cookie cake

    Beat butter with a hand mixer or stand mixer until it becomes smooth and creamy. Beat in brown sugar and granulated sugar. Add eggs and vanilla extract and mix until thick and creamy.

    Mixing eggs into batter

    In a separate bowl, stir together flour, baking soda, baking powder, and salt. Add this dry mixture to the wet mixture and fold together with a spatula until almost combined. Add in the rainbow sprinkles and fold until just incorporated.

    Mixing flour and sprinkles into batter

    Smooth the batter into an 8" cake pan lined with a circle of parchment paper. Bake at 350F for 23-25 minutes or until the top has set and edges are golden brown.

    Spreading cookie batter into round pan

    Let your cookie cake cool for at least 10 minutes before removing from pan. The middle will sink slightly as it cools. Decorate it by piped vanilla buttercream around the edges and writing a cute message in melted chocolate if desired.

    Baked cookie cake with sprinkles on top

    Tips for making the best funfetti cookie cake

    • As with cookies, it's better to underbake this cookie cake than overbake it. Take it out of the oven when the edges are just starting to brown to keep the middle of the cake soft and chewy. It will continue cooking in the pan for a little while after removing it from the oven.
    • Be sure to use the rainbow sprinkles or rainbow jimmies that are long and skinny shaped, NOT the tiny round nonpareils or hundreds and thousands. The latter will instantly bleed their colour into the batter the moment they are mixed in and don't work well for funfetti desserts. Here, I've used a pastel version of rainbow jimmies but the classic full colour sprinkles will give you a bolder, more colourful look.
    • Add chocolate chips for extra sweetness and a softer, melty texture if you want it to be reminiscent of a classic chocolate chip cookie.
    • Instead of buttercream, try topping this cake with whipped cream, vanilla ice cream, or chocolate drizzles.

    Storing a cookie cake

    A cookie cake without buttercream frosting can be stored in an airtight container at room temperature for several days. After frosting, it will need to be stored in an airtight container in the fridge for 3-5 days.

    A slice of cake on a plate with sprinkles

    Other cookie recipes to try

    • Chocolate Chip S’mores Cookies
    • Mini Egg Cookies
    • Matcha White Chocolate Cookies
    • Toasted Pistachio Dark Chocolate Cookies
    • Fig & Speculoos Cookie Butter Cookies
    A slice of cookie cake on a plate

    Funfetti Cookie Cake

    Author: Gail Ng
    Celebrate birthdays or special occasions with a soft & chewy funfetti cookie cake with vanilla buttercream frosting and rainbow sprinkles
    5 from 1 vote
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    Prep Time 30 mins
    Cook Time 25 mins
    Total Time 55 mins
    Yield 1 8" cake
    Category Desserts
    Cuisine American

    Ingredients
      

    Cookie Cake

    • 115 g unsalted butter, softened
    • 50 g brown sugar
    • 150 g granulated sugar
    • 2 large eggs
    • 2 teaspoon vanilla extract
    • 200 g all-purpose flour
    • ½ teaspoon baking soda
    • ½ teaspoon baking powder
    • ½ teaspoon salt
    • 3 tablespoons rainbow sprinkles

    Vanilla Buttercream Frosting

    • 60 g unsalted butter, softened
    • 75 g powdered sugar
    • 1 teaspoon vanilla extract
    • 1 tablespoon milk
    • 50 g dark chocolate, for piping a message (optional)

    Instructions
     

    Cookie Cake

    • Preheat oven to 350°F and line the bottom of a 8" cake pan with a circle of parchment paper.
    • In a large bowl, beat butter with a hand mixer or stand mixer until it becomes smooth and creamy. Mix in brown sugar and granulated sugar until well combined. Add eggs and vanilla extract and mix until creamy.
    • In a medium bowl, stir together flour, baking soda, baking powder, and salt. Add this dry mixture to the wet mixture and fold together with a spatula until almost combined.
    • Add in the rainbow sprinkles and fold until just incorporated.
    • Smooth the batter into your lined cake pan. Don't worry about getting all the way to the edges as it will fill the pan as it bakes. Bake at 350°F for 23-25 minutes or until the top has set and edges are golden brown.
    • Let cool for at least 10 minutes before removing from pan. The middle will sink as it cools.

    Vanilla Buttercream Frosting

    • In a mixing bowl, beat softened butter with a hand mixer or stand mixer for about 5 minutes until light, fluffy, and creamy.
    • With the mixer on low, add in the powdered sugar and vanilla extract. Add in milk as needed, one tablespoon at a time, until the buttercream becomes smooth, creamy, and pipeable.
    • Pipe buttercream on top of the cake and write a message with melted chocolate, if desired. 

    Nutrition

    Calories: 3642kcal | Carbohydrates: 481g | Protein: 38g | Fat: 176g | Saturated Fat: 107g | Polyunsaturated Fat: 9g | Monounsaturated Fat: 47g | Trans Fat: 6g | Cholesterol: 707mg | Sodium: 2105mg | Potassium: 844mg | Fiber: 11g | Sugar: 314g | Vitamin A: 4892IU | Calcium: 338mg | Iron: 18mg
    Keywords birthday cookie cake, birthday desserts, confetti cookie cake, funfetti cookie cake
    Tried this recipe?Leave a comment & rating to let us know how it was and tag your Instagram posts with @teakandthyme!

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    Hi, I'm Gail! I'm just a Canadian girl with a major sweet tooth making desserts on the internet. Let me show you how you can make bakery-worthy desserts at home that will have you wondering why you haven't opened your own café yet.

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