Craving something sweet and festive? You’re in luck! These Funfetti Sugar Cookie Bars are easy to whip up and packed with joy. With colorful sprinkles and a touch of vanilla, these bars are perfect for gatherings or a simple treat at home. Join me as I guide you through simple steps to make these delightful bars and tips to make them shine. Let's get baking!
Why I Love This Recipe
- Easy to Make: These Funfetti Sugar Cookie Bars come together quickly with simple ingredients, making them perfect for any occasion.
- Perfect for Celebrations: The vibrant rainbow sprinkles add a festive touch, making these bars an ideal treat for birthdays and celebrations.
- Soft and Chewy Texture: Unlike traditional cookies, these bars have a delightful soft and chewy texture that everyone loves.
- Customizable Toppings: You can easily adapt the frosting and sprinkles to match any theme or preference, adding a personal touch.
Ingredients
Main Ingredients
- 2 ½ cups all-purpose flour
- 1 cup unsalted butter, softened to room temperature
- 1 cup granulated sugar
- ½ cup packed brown sugar
The main ingredients are key to making these funfetti sugar cookie bars soft and tasty. All-purpose flour gives the bars structure. Unsalted butter adds richness and helps with that soft texture. Granulated sugar and brown sugar together create a lovely sweet flavor.
Additional Ingredients
- 2 large eggs, at room temperature
- 2 teaspoons vanilla extract
- ½ cup rainbow sprinkles (plus extra for topping)
- 1 cup powdered sugar (for frosting)
You need eggs and vanilla extract for moisture and flavor. The rainbow sprinkles bring joy and color, making these bars festive. For the frosting, powdered sugar provides sweetness and creaminess.
Optional Ingredients
- 2 tablespoons milk (for frosting)
- Extra sprinkles for topping
Using milk in the frosting makes it smooth and spreadable. Extra sprinkles on top give the bars a fun and bright finish. You can always get creative with the toppings!

Step-by-Step Instructions
Preparation Steps
Preheat Oven and Prepare Baking Pan First, set your oven to 350°F (175°C). Grab a 9x13 inch baking pan. Grease it with butter or line it with parchment paper. This way, the bars will come out easily after baking.
Mix Dry Ingredients In a medium bowl, whisk together the flour, baking soda, and salt. Make sure they mix well. Set this bowl aside for now.
Mixing Ingredients
Cream Butter and Sugars In a large bowl, cream the softened butter with granulated and brown sugars. Use an electric mixer on medium speed. Beat this mix for about 3-4 minutes until it’s light and fluffy.
Incorporate Eggs and Vanilla Add the eggs one at a time, mixing well after each addition. Then, pour in the vanilla extract and mix until everything is combined.
Baking Process
Combine Wet and Dry Ingredients Gradually mix the dry ingredients into the wet mixture. Use low speed to combine. Be careful not to overmix; some streaks of flour are okay.
Bake and Cool Bars Fold in the rainbow sprinkles with a spatula. Spread the dough evenly in your prepared pan. Bake for 20-25 minutes. The edges should be lightly golden, and a toothpick should come out clean. Let the bars cool in the pan for about 10 minutes, then transfer them to a wire rack to cool completely.
Tips & Tricks
Baking Tips
How to Know When Bars are Done You will know when the bars are done by checking the edges. They should be light golden brown. Insert a toothpick into the center. If it comes out clean, the bars are ready. Be careful not to overbake, or they will be dry.
Importance of Room Temperature Ingredients Using room temperature ingredients is key for smooth mixing. It helps the butter and sugars blend well. This leads to a light and fluffy texture. Take the butter and eggs out ahead of time. Let them sit for about 30 minutes.
Frosting Tips
Achieving Perfect Frosting Consistency For the frosting, mix powdered sugar, milk, and vanilla. Whisk until smooth and creamy. If it’s too thick, add a tiny bit more milk. If it’s too thin, add more powdered sugar. You want it spreadable but not runny.
Decorating with Sprinkles Adding sprinkles to the frosting makes it fun! Sprinkle them on top right after frosting. This helps them stick better. You can use as many as you like. Feel free to mix colors for a vibrant look.
Common Mistakes to Avoid
Overmixing the Dough Be careful not to overmix the dough. Mix just until combined. A few streaks of flour are okay. Overmixing can make the bars tough. This is a common mistake, so keep an eye on it!
Not Properly Measuring Ingredients Measuring ingredients accurately is crucial. Use the right tools like measuring cups and spoons. For flour, spoon it into the cup and level it off. This ensures you have the right amount. Too much flour can ruin the texture.
Pro Tips
- Tip Title 1: Ensure your butter is at room temperature for a smoother and creamier dough.
- Tip Title 2: For a chewier texture, do not overmix the dough once you add the dry ingredients.
- Tip Title 3: Let the bars cool completely before frosting to prevent the icing from melting.
- Tip Title 4: Experiment with different types of sprinkles for unique flavors and colors!
Variations
Flavor Variations
You can mix up the funfetti sugar cookie bars with different flavors!
- Chocolate Chip Funfetti Bars: Add 1 cup of chocolate chips to the dough. This gives a rich, sweet taste. The chocolate pairs well with the sprinkles, making every bite special.
- Lemon Zest Funfetti Bars: Grate 1 tablespoon of lemon zest into the mix. This adds a bright, citrusy flavor. It makes the bars refreshing and perfect for a sunny day.
Dietary Modifications
If you need to make changes for diets, here are some options.
- Gluten-Free Flour Substitutes: You can use gluten-free all-purpose flour. This will keep the texture similar. Look for brands that have xanthan gum for better results.
- Vegan Alternatives for Ingredients: Replace butter with coconut oil. Use flax eggs instead of regular eggs. Mix 1 tablespoon of ground flaxseed with 3 tablespoons of water. Let it sit for 5 minutes to thicken. This works well in the recipe.
Seasonal Variations
You can also make funfetti bars fit any season!
- Holiday-Themed Sprinkles: Use red and green sprinkles for Christmas. Try pastel colors for Easter. The sprinkles can match any holiday theme you want.
- Festive Flavor Add-Ins: Add crushed peppermint for winter treats. In fall, mix in pumpkin spice. These changes keep the bars exciting year-round!
Storage Info
Short-Term Storage
To keep your Funfetti sugar cookie bars fresh, store them in an airtight container. This helps prevent them from drying out. You can place them in the refrigerator for up to a week. Make sure to layer parchment paper between the bars to avoid sticking.
If you want to keep them at room temperature, use the same airtight container. Just ensure it’s cool and dry. They will stay fresh for about three to four days this way.
Long-Term Storage
You can freeze Funfetti sugar cookie bars for longer storage. First, cool them completely. Then, cut them into squares. Wrap each square in plastic wrap and place them in a freezer-safe bag or container. They can last up to three months in the freezer.
When you’re ready to enjoy them, remove the desired number of bars. Let them thaw in the fridge overnight. If you want to eat them warm, pop them in the microwave for about 15 seconds.
Shelf Life
How long do cookie bars last? If stored properly, they can last up to one week in the fridge. In the freezer, they last about three months.
Signs of spoilage include a dry texture or an off smell. If you see mold, it’s time to toss them. Always check before you indulge!
FAQs
Common Questions
How to Make Funfetti Sugar Cookie Bars Chewy? To make these bars chewy, do not overmix the dough. Mix just until you see no flour. Use room temperature butter and eggs. This helps create a soft texture. Also, bake for the shorter time, about 20 minutes. This keeps the center moist and chewy.
Can I Use Different Sprinkles? Yes, you can use any sprinkles you like! Try chocolate sprinkles for a twist. You can also use holiday-themed sprinkles for fun. Just make sure to add them before baking for the best look.
Recipe Adjustments
Can I Halve the Recipe? You can easily halve the recipe. Just divide all the ingredients by two. Use a smaller baking pan, like an 8x8 inch pan. Watch the baking time, as it may need less time in the oven.
What is the Best Way to Cut Cookie Bars? The best way to cut cookie bars is to use a sharp knife. Let the bars cool completely first. For cleaner cuts, run the knife under hot water. Wipe it dry before cutting each piece.
Ingredient Substitutions
What Can I Use Instead of Eggs? If you need an egg substitute, use applesauce or mashed banana. Use 1/4 cup of either for each egg. This will keep the bars moist and add some natural sweetness.
Can I Replace Butter with Margarine? Yes, you can replace butter with margarine. Use the same amount for the best results. The texture may be slightly different, but the taste should still be great.
You learned about making Funfetti Sugar Cookie Bars, including key ingredients and steps. Key ingredients like butter, flour, and sugars create flavor and texture. I also shared baking tips to avoid mistakes. Consider variations for seasonal fun or dietary needs. Proper storage keeps them fresh for longer. Enjoy baking these sweet treats, and don’t worry about making them perfect. Have fun and get creative!