If you’re looking for a fun and easy dessert that’s bound to make your taste buds dance, Funfetti Cake Batter Cookie Bars are the perfect choice! These bars combine the delicious, nostalgic flavor of cake batter with the chewy texture of cookie bars, all topped with creamy almond buttercream frosting and colorful sprinkles. Ideal for any celebration, these bars are as visually appealing as they are tasty, and best of all—they are incredibly simple to make with just a handful of ingredients.
In this article, we’ll walk through the best way to make these cake batter cookie bars, share helpful tips and tricks for success, and answer all the questions you might have about storage, serving, and customizations. Let’s dive in!

What Are Funfetti Cake Batter Cookie Bars?
Funfetti Cake Batter Cookie Bars are a hybrid dessert that combines the texture and flavor of cookie dough with the vibrancy of cake batter. The result is a soft, thick, and slightly gooey cookie bar that tastes just like a birthday cake, but with the ease of a cookie. These bars are made using a cake mix and sugar cookie mix as the base, along with eggs, melted butter, and vanilla extract. The addition of rainbow sprinkles throughout the batter gives it that funfetti look and flavor. Once baked, the bars are topped with a sweet almond buttercream frosting to elevate the flavor and add an extra touch of indulgence.
The best part? These bars are incredibly versatile, and you can customize them with various sprinkles, frosting flavors, or additional mix-ins. So whether you’re making them for a birthday, holiday, or just a fun weeknight treat, these bars are sure to be a crowd-pleaser.
Ingredients Needed for Funfetti Cake Batter Cookie Bars
Cake Batter Cookie Bar Ingredients:
- Sugar Cookie Mix: You’ll need a pouch of sugar cookie mix. This will serve as the foundation for the bars. Make sure to only use the dry ingredients and not prepare the mix as instructed on the package.
- White Cake Mix: A box of white cake mix adds structure and sweetness to the bars.
- Melted Butter: Adds richness and moisture to the bars. Opt for salted butter for that sweet-salty combo that works so well in baked goods.
- Eggs: These help bind the ingredients and provide the necessary texture.
- Vanilla Extract: Enhances the flavor of the batter and pairs perfectly with the sweetness of the cake mix.
- Rainbow Sprinkles: These small, colorful sprinkles (nonpareils are ideal) will give the bars their signature funfetti appearance. If you prefer, you can use jimmies, but be gentle with stirring to avoid color bleeding.
Almond Buttercream Frosting Ingredients:
- Butter: You’ll need softened butter for the frosting. Again, salted butter is recommended for that extra layer of flavor.
- Powdered Sugar: For sweetness and the smooth texture of the frosting.
- Milk: Start with 2 tablespoons and adjust until you get the perfect frosting consistency. For a richer texture, heavy cream works wonderfully.
- Almond Extract: A key ingredient for the distinctive flavor of the frosting. If you prefer, you can substitute it with vanilla extract.
- Additional Sprinkles: Use more sprinkles to garnish the frosted bars and give them an extra pop of color.

How to Make Funfetti Cake Batter Cookie Bars: Step-by-Step
1. Prepare the Oven and Baking Dish
Preheat the oven to 350°F (175°C). Grease a 9×13 inch baking pan with non-stick cooking spray or line it with parchment paper for easy removal of the bars later. Set aside.
2. Mix the Cake Batter Base
In a large mixing bowl, use an electric mixer to combine the sugar cookie mix, white cake mix, melted butter, eggs, and vanilla extract. Mix on medium-high speed for about 1-2 minutes, until everything is well combined and smooth. The dough will be thick.
3. Add the Sprinkles
Gently fold in the rainbow sprinkles using a wooden spoon or a spatula. Be sure not to overmix, as this can cause the sprinkles to bleed color into the batter, which would affect the visual appeal of the bars.
4. Spread the Dough
Spoon the dough into the prepared pan. It’s best to drop large spoonfuls around the pan and then spread it evenly using a spatula. This method helps distribute the dough evenly and prevents a clumpy texture.
5. Bake the Bars
Place the pan in the oven and bake for 28-32 minutes. The edges should be golden brown, and the center should have a slight puff to it. Test the doneness with a toothpick—insert it into the center, and it should come out clean without any wet dough.
6. Cool the Bars
Allow the bars to cool completely in the pan. This typically takes around 1 hour. It’s essential to let them cool down fully before frosting, as a warm base will cause the frosting to melt off.
7. Make the Almond Buttercream Frosting
While the bars are cooling, make the frosting. In a mixing bowl, use an electric mixer to beat the butter until it’s smooth and creamy. Gradually add the powdered sugar, almond extract, and milk (adjust the milk until the frosting reaches a smooth, spreadable consistency). Once done, set aside.
8. Frost and Garnish
Once the bars are completely cool, spread the almond buttercream frosting evenly over the top. For extra flair, sprinkle more rainbow sprinkles on top for a pop of color and texture. Cut into squares, and enjoy!
Tips and Variations for Success
- Wait for the Bars to Cool: It’s crucial to let the bars cool completely before frosting. If they’re even slightly warm, the frosting will melt right off, leaving you with a gooey mess.
- Don’t Over-Stir the Sprinkles: Stir gently when adding sprinkles to avoid bleeding color into the batter. Overmixing can cause the vibrant rainbow colors to become muddled.
- Customize the Frosting: You can make the frosting even richer by substituting some of the milk with heavy cream. This gives the frosting a thicker, creamier texture that’s perfect for spreading on top of these bars.
- Use Different Sprinkles: While the recipe calls for nonpareils (small ball sprinkles), feel free to get creative with other types of sprinkles like jimmies or confetti sprinkles. Just be sure to stir them in gently.
- Holiday Versions: Switch out the rainbow sprinkles for holiday-themed ones. For example, you can use red and green sprinkles for Christmas or pastel colors for Easter.
How to Store Leftovers
These Funfetti Cake Batter Cookie Bars are just as delicious the next day! Here’s how to store them:
- Room Temperature: You can keep leftovers at room temperature for up to 3 days. Just store them in an airtight container to maintain freshness.
- Refrigeration: For longer storage, keep the bars in an airtight container in the fridge for up to 5 days. You can serve them chilled or let them sit at room temperature for a few minutes before enjoying.
- Freezing: If you want to save some for later, freeze the bars for up to 3 months. Wrap them tightly in plastic wrap or foil and store them in a freezer-safe container. When you’re ready to eat, let them thaw in the fridge overnight or at room temperature for a few hours.

Fun Variations for Funfetti Cake Batter Cookie Bars
While the original recipe is a surefire hit, there’s always room for creativity in the kitchen. Whether you’re making these bars for a special event or just experimenting with flavors, there are several fun ways to switch things up. Here are some suggestions to get you started:
1. Use Different Cake Mix Flavors
While the white cake mix is classic, you can experiment with other flavors to create unique combinations. For example:
- Chocolate Funfetti Bars: Swap the white cake mix for chocolate cake mix for a rich, chocolatey twist.
- Lemon Funfetti Bars: Use lemon cake mix for a zesty, citrusy flavor that pairs wonderfully with sprinkles.
- Funfetti Cookie Butter Bars: Mix in a bit of cookie butter for an additional layer of sweetness and flavor.
2. Add Mix-Ins for Extra Flavor
If you’re looking to add texture or flavor complexity to your Funfetti Cake Batter Cookie Bars, try incorporating some of these mix-ins:
- Chocolate Chips: Add semi-sweet, milk, or even white chocolate chips to the batter for a little extra indulgence.
- Nuts: Chopped walnuts or pecans can add crunch and a nutty contrast to the softness of the bars.
- M&Ms: For more color and flavor, mix in some M&Ms, especially around holidays when themed M&Ms are available.
3. Frosting Flavor Variations
The almond buttercream frosting is rich and delightful, but you can try other frosting variations depending on your taste:
- Vanilla Buttercream: Swap the almond extract with vanilla extract for a classic flavor combination.
- Cream Cheese Frosting: A tangy cream cheese frosting pairs wonderfully with the sweetness of these bars and complements the cake batter flavor.
- Chocolate Frosting: If you love chocolate, a rich chocolate frosting can be an indulgent topping for these bars, making them even more decadent.
4. Holiday-Themed Funfetti Bars
As mentioned earlier, Funfetti Cake Batter Cookie Bars are perfect for customizing for different holidays. Here are some easy ways to change them up:
- Christmas: Use red and green sprinkles for a festive touch. You can even add peppermint extract to the frosting for a seasonal flavor.
- Easter: Use pastel-colored sprinkles for a spring vibe, or add mini chocolate eggs for an Easter twist.
- 4th of July: Red, white, and blue sprinkles and some star-shaped cookie cutters can make these bars perfect for your Independence Day celebration.
How to Serve Funfetti Cake Batter Cookie Bars
These bars are already a showstopper, but there are some great ways to elevate the experience even more:
1. Serve Warm with Ice Cream
For a truly indulgent treat, serve the Funfetti Cake Batter Cookie Bars warm with a scoop of vanilla ice cream. The warm bars combined with cold, creamy ice cream create a heavenly dessert experience.
2. Pair with Whipped Cream
If you’re not an ice cream fan, whipped cream is another excellent topping. It adds a light and fluffy texture that complements the dense and chewy bars. You can even add a drizzle of chocolate or caramel sauce for extra sweetness.
3. Make Mini Bars for Parties
For a party-friendly version of this dessert, consider making mini versions of the bars. After baking and cooling, cut them into smaller squares or use a cookie cutter to create fun shapes. These bite-sized treats are perfect for guests to grab and go.
How to Serve Funfetti Cake Batter Cookie Bars at Parties
If you’re looking to serve these bars at a party or family gathering, here are a few tips to present them in style:
1. Garnish with Candies
For extra fun and flavor, garnish the frosted bars with colorful candies. M&Ms, mini chocolate chips, or even candy-coated chocolate pieces work well as a festive garnish.
2. Cake Stand Presentation
Place the Funfetti Cake Batter Cookie Bars on a cake stand to elevate their presentation. A beautifully arranged platter of bars makes a stunning centerpiece for a dessert table, especially at themed parties like birthdays or baby showers.
3. Pair with Beverages
These bars go wonderfully with several beverages. For kids, serve with milk or a milkshake for a comforting pairing. For adults, a cup of coffee or a flavored latte can complement the sweetness of the bars.

Nutritional Information for Funfetti Cake Batter Cookie Bars
It’s always good to know the nutritional facts before indulging in your favorite desserts. Here’s a breakdown of the nutrition per serving (1 bar):
Nutrient | Amount per Serving |
---|---|
Calories | 257 kcal |
Total Fat | 16 g |
Saturated Fat | 10 g |
Polyunsaturated Fat | 1 g |
Monounsaturated Fat | 4 g |
Trans Fat | 1 g |
Cholesterol | 62 mg |
Sodium | 271 mg |
Potassium | 30 mg |
Total Carbohydrates | 28 g |
Fiber | 0.2 g |
Sugar | 19 g |
Protein | 2 g |
Vitamin A | 470 IU |
Calcium | 57 mg |
Iron | 1 mg |
While these bars are indulgent, they are also packed with flavor, making them a treat you can enjoy on special occasions. If you’re looking to adjust the recipe for a healthier version, consider swapping some of the ingredients like using reduced-fat butter or milk.
Final Tips for Perfecting Your Funfetti Cake Batter Cookie Bars
Making Funfetti Cake Batter Cookie Bars is fun and simple, but here are some final tips to make sure they turn out just right every time!
1. Cooling is Crucial
- Patience is key when it comes to cooling the bars before frosting them. Let them cool completely. If they are even slightly warm, the frosting will slide right off and make a mess. Trust me, waiting is worth it for a flawless finish.
2. Frosting Tips
- If you want your frosting to be extra smooth and fluffy, I highly recommend using heavy cream instead of regular milk. This will create a richer, whipped texture that’s just delightful. However, if you prefer a lighter version, you can stick to regular milk.
- Don’t skip the almond extract! Just a tiny bit can elevate the entire flavor of your frosting. If you don’t have it, vanilla extract works as a fine substitute, but the almond really adds something special.
3. Handling the Sprinkles
- When adding sprinkles to the dough, remember to fold them in gently. Overmixing can cause the color to bleed, which might not give you the vibrant look you want. If you’re worried about the sprinkles bleeding, try using jimmies (longer sprinkles) instead of nonpareils (the small, ball-shaped ones). They are less likely to lose their color.
4. Storage and Shelf Life
- These bars are best enjoyed fresh, but leftovers can be stored easily. If you’re not going to finish them all in one sitting, store them in an airtight container at room temperature for up to 3 days.
- For longer storage, keep them in the refrigerator for up to 5 days. Let them sit at room temperature for a few minutes before serving, so they’re nice and soft.
- For even longer storage, you can freeze them. Just wrap the bars tightly in plastic wrap and store them in a freezer-safe bag. They’ll stay good for up to 3 months. Thaw them in the fridge or at room temperature before serving.
5. Customization Ideas
- Flavor variations: Switch up the cake mix flavor. Try using chocolate cake mix for a different twist, or go wild with strawberry or lemon cake mix.
- Mix-ins: Customize your bars even further by adding different types of mix-ins. Try white chocolate chips, mini marshmallows, crushed candy bars, or even nuts for an added texture and flavor boost.
- Frosting variations: While the almond frosting is a hit, feel free to experiment with different frostings like cream cheese frosting or a simple buttercream for a change of flavor.
Conclusion on Funfetti Cake Batter Cookie Bars Recipe
Funfetti Cake Batter Cookie Bars are the perfect dessert for any occasion. Their bright colors, soft texture, and sweet almond frosting make them a showstopper at birthday parties, holidays, or even as a fun family treat. With just a handful of ingredients, these bars are an easy and delicious way to bring some joy into your kitchen. Don’t forget to play around with different flavors and decorations to make them your own!
Funfetti Cake Batter Cookie Bars Recipe
Ingredients:
- For the Cookie Bars:
- 1 pouch (1 lb 1.5 oz) sugar cookie mix
- 1 box (15.25 oz) white cake mix
- 1 cup (2 sticks) melted butter
- 3 large eggs
- 1 teaspoon vanilla extract
- 3 tablespoons rainbow sprinkles (preferably nonpareils)
- For the Almond Buttercream Frosting:
- 1/2 cup (1 stick) butter, softened
- 1 1/2 cups powdered sugar
- 2-4 tablespoons milk (depending on desired consistency)
- 1/4 teaspoon almond extract
- Additional sprinkles for garnish
Instructions:
- Preheat the Oven:
Preheat the oven to 350°F (175°C). Grease a 9×13-inch cake pan with cooking spray or line it with parchment paper for easy removal. - Make the Cookie Batter:
In a large mixing bowl, use an electric mixer to beat the sugar cookie mix, white cake mix, melted butter, eggs, and vanilla extract on medium-high speed for 1-2 minutes until well combined. - Add the Sprinkles:
Gently fold in the rainbow sprinkles using a wooden spoon or spatula. Be careful not to over-stir as this may cause the sprinkles to bleed color. - Spread the Batter:
Evenly spread the batter into the prepared pan. For easier spreading, drop large spoonfuls of batter all over the pan and then spread it out evenly. - Bake the Bars:
Bake for 28-32 minutes, or until the edges are golden brown and the middle is firm. A toothpick inserted into the center should come out clean. - Cool:
Let the bars cool completely inside the pan, about 1 hour. - Make the Frosting:
In a mixing bowl, use an electric mixer to beat the butter until smooth and creamy. Add the powdered sugar, almond extract, and milk, beating until the frosting is spreadable. Add more milk if needed. - Frost the Bars:
Once the bars are completely cool, spread the almond buttercream frosting over the top. Garnish with additional sprinkles. - Serve:
Cut into squares and enjoy! These are delicious at room temperature or chilled.
Notes:
- Frosting Tip: For an extra fluffy frosting, use heavy cream instead of regular milk. This creates a richer, whipped texture.
- Sprinkles: Be gentle when mixing the sprinkles into the dough to avoid color bleeding. You can also substitute nonpareils with jimmies to avoid bleeding.
- Storage: Store leftovers in an airtight container at room temperature for up to 3 days, or refrigerate for up to 5 days. Bars can also be frozen for up to 3 months. Thaw in the fridge or at room temperature before serving.
Nutritional Facts (per serving):
- Calories: 257 kcal
- Carbohydrates: 28g
- Protein: 2g
- Fat: 16g
- Saturated Fat: 10g
- Polyunsaturated Fat: 1g
- Monounsaturated Fat: 4g
- Trans Fat: 1g
- Cholesterol: 62mg
- Sodium: 271mg
- Potassium: 30mg
- Fiber: 0.2g
- Sugar: 19g
- Vitamin A: 470 IU
- Calcium: 57mg
- Iron: 1mg
Recipe Details:
- Prep Time: 10 minutes
- Cook Time: 30 minutes
- Total Time: 1 hour 40 minutes
- Method: Baking
- Cuisine: American
- Servings: 20
- Calories: 257 kcal per serving
- Yield: 20 bars