I tried my hand at a Cookie Cake Recipe that surpasses any birthday cake with its playful twist. This giant, soft-baked cookie features unsalted butter, granulated sugar, eggs, and vanilla extract combined with vibrant rainbow sprinkles. I absolutely relish the fun and balance this irresistible treat brings with every slice.

I recently tried my hand at making a Funfetti Sugar Cookie Cake and I gotta say, it’s a game changer. This recipe is a fun twist on a classic cookie cake and it’s so easy to make that you’ll feel like a pro in no time.
I mixed 1 cup of softened unsalted butter with 1 cup granulated sugar till they were creamy, then added 2 large eggs and 2 teaspoons of vanilla extract. Once my wet ingredients were all smooth, I folded in 2 1/4 cups all-purpose flour along with 1/2 teaspoon each of baking soda, baking powder, and salt.
The best part? Mixing in 1/2 cup of rainbow sprinkles to give you that vibrant, funfetti look.
I even sprinkled on some extra at the top before baking. Trust me, this soft-baked cookie cake is a sweet treat worth trying especially if you’re into unique sweets treats and cookie cake recipes.
Why I Like this Recipe
I love how simple it is to prepare; mixing the butter, sugar, eggs and vanilla creates this super creamy base that makes the whole recipe stress free. I like the way the sprinkles are folded into the batter – they give every bite a burst of color and make me feel like I’m celebrating something special every time I take a bite. I also really appreciate the soft baked texture – it’s not as chewy as a regular cookie and feels almost like a cake, which is awesome because I like the best of both worlds. Lastly, adding extra sprinkles on top just feels like a little secret bonus that makes it even more fun and festive to share with friends and family.
Ingredients

- Unsalted butter gives rich flavor and moisture; its a fatty, energy boosting ingredient.
- Granulated sugar sweetens the cake and adds carbs; not super healthy in large amounts.
- Eggs offer protein and help bind all mix ingredients for a solid structure.
- Vanilla extract boosts flavor with a mild scent, making the taste pop in every bite.
- All-purpose flour supplies carbohydrates for structure and crumb, but has little nutrition.
- Baking soda and powder work together to create lift while salt brings out savory notes.
- Rainbow sprinkles add fun color and extra sweetness even though they are mostly decorative.
Ingredient Quantities
- 1 cup unsalted butter, softened
- 1 cup granulated sugar
- 2 large eggs, at room temp
- 2 teaspoons vanilla extract
- 2 1/4 cups all-purpose flour
- 1/2 teaspoon baking soda
- 1/2 teaspoon baking powder
- 1/2 teaspoon salt
- 1/2 cup rainbow sprinkles (plus extra for topping)
How to Make this
1. Preheat your oven to 350°F and grease a 9-inch round cake pan.
2. In a large bowl, beat 1 cup unsalted butter and 1 cup granulated sugar until it’s creamy and light.
3. Crush in 2 large eggs at room temp and stir in 2 teaspoons vanilla extract until well combined.
4. In another bowl, sift together 2 1/4 cups all-purpose flour, 1/2 teaspoon baking soda, 1/2 teaspoon baking powder, and 1/2 teaspoon salt.
5. Slowly add the dry ingredients to the creamed butter mixture while mixing on a low speed so you dont overdo it.
6. Gently fold in 1/2 cup rainbow sprinkles making sure the color stays even through the batter.
7. Pour the batter into your prepared pan and smooth the top with a spatula.
8. Pop it in the oven and bake for about 20 to 25 minutes or until a toothpick poked in the center comes out clean.
9. Let the cookie cake cool in the pan for about 10 minutes then transfer it to a wire rack to cool completely.
10. Once cooled, sprinkle some extra rainbow sprinkles on top if you want a little more flair then serve and enjoy!
Equipment Needed
1. Preheated oven
2. 9-inch round cake pan
3. Large mixing bowl
4. Medium bowl for dry ingredients
5. Electric mixer or hand whisk
6. Spatula for smoothing the batter
7. Sifter for the flour, baking soda, baking powder, and salt
8. Measuring cups and spoons
9. Wire cooling rack
FAQ
Funfetti Sugar Cookie Cake Recipe Substitutions and Variations
- Unsalted butter: You can use margarine or even coconut oil if you’re going for a slight coconut twist in your cookie cake
- Granulated sugar: Light brown sugar can be used instead, but it might add a little more molasses flavor so keep that in mind
- Eggs: You can substitute each egg with a flax egg (mix 1 tablespoon of ground flax with 2.5 tablespoons water) or applesauce (1/4 cup per egg) if you need a vegan option
- Vanilla extract: Almond extract works as a substitute but use a bit less since it’s usually stronger, or use imitation vanilla
- Rainbow sprinkles: If you dont have these, try using nonpareils or even colorful mini chocolate chips for a fun twist
Pro Tips
1. Make sure your butter is really soft before you start so it mixes perfectly with the sugar. Taking it out of the fridge about an hour ahead of time works better than leaving it at room temperature for just a few minutes.
2. When you add the eggs to your creamed butter and sugar, do it one at a time so your batter comes out even and avoids any weird lumps.
3. Don’t rush when mixing in the flour and baking ingredients. Keeping the speed low is key to a light texture and helps prevent the cake from getting tough.
4. Use the toothpick test a few minutes before the full baking time is up, because ovens can be unpredictable and you dont want it to be overbaked.
Funfetti Sugar Cookie Cake Recipe
My favorite Funfetti Sugar Cookie Cake Recipe
Equipment Needed:
1. Preheated oven
2. 9-inch round cake pan
3. Large mixing bowl
4. Medium bowl for dry ingredients
5. Electric mixer or hand whisk
6. Spatula for smoothing the batter
7. Sifter for the flour, baking soda, baking powder, and salt
8. Measuring cups and spoons
9. Wire cooling rack
Ingredients:
- 1 cup unsalted butter, softened
- 1 cup granulated sugar
- 2 large eggs, at room temp
- 2 teaspoons vanilla extract
- 2 1/4 cups all-purpose flour
- 1/2 teaspoon baking soda
- 1/2 teaspoon baking powder
- 1/2 teaspoon salt
- 1/2 cup rainbow sprinkles (plus extra for topping)
Instructions:
1. Preheat your oven to 350°F and grease a 9-inch round cake pan.
2. In a large bowl, beat 1 cup unsalted butter and 1 cup granulated sugar until it’s creamy and light.
3. Crush in 2 large eggs at room temp and stir in 2 teaspoons vanilla extract until well combined.
4. In another bowl, sift together 2 1/4 cups all-purpose flour, 1/2 teaspoon baking soda, 1/2 teaspoon baking powder, and 1/2 teaspoon salt.
5. Slowly add the dry ingredients to the creamed butter mixture while mixing on a low speed so you dont overdo it.
6. Gently fold in 1/2 cup rainbow sprinkles making sure the color stays even through the batter.
7. Pour the batter into your prepared pan and smooth the top with a spatula.
8. Pop it in the oven and bake for about 20 to 25 minutes or until a toothpick poked in the center comes out clean.
9. Let the cookie cake cool in the pan for about 10 minutes then transfer it to a wire rack to cool completely.
10. Once cooled, sprinkle some extra rainbow sprinkles on top if you want a little more flair then serve and enjoy!









