Soft and chewy funfetti Oreo bars taste like a party in cookie bar form! They have a buttery cake batter flavor and are jam-packed with colorful sprinkles, Oreo cookies, and chocolate chips. No mixer required and just 15 minutes to prep!
Funfetti Oreo Blondies (Tweaked and Perfected)
These Funfetti Oreo bars are actually one of my older recipes (and one of my personal favorites!). The previous version was delicious, but some bakers were having issues with the bars baking all the way through. I did some slight tweaking to the recipe to make sure it works like a charm in every kitchen.
Why You’ll Love Them
- Texture: Slightly underbaking creates soft centers with chewy edges and crunchy Oreo bits in every bite. The sprinkles add a great texture too!
- Flavor: In the past I’ve liked to use powdered cake mix in some of my funfetti desserts (like my funfetti cheesecake bars) for a real “cake batter flavor” but I think I’ve achieved that taste here without using any box mix. A little extra vanilla, melted butter (the better to infuse the batter with a rich, buttery flavor), and a heavy pour of sprinkles all lend themselves to a sweet cake batter flavor without a processed aftertaste.
- Technique: Simple and fast with NO mixer required! Starting with melted butter means the dough is easy enough to mix with only a spoon or spatula.
- Appearance: Colorful sprinkles, Oreo cookies, mini chocolate chips AND white chocolate chips…this is a party in cookie bar form! Make sure to read my tips below about how to keep your bars bright so the colorful sprinkles and Oreos shine through, otherwise they might turn out gray (still tasty though!).
If you want more hybrid desserts, check out my Reese’s stuffed cookies or Oreo cheesecake bars next!
Jump to:
Ingredients
Nothing fancy or complicated here, but I will go over a few of the key players before we get started.
- Oreos. You’ll need about half a pack of Oreos. Regular or double stuf will work, and you’ll want to leave the cream filling inside of the cookies (just like when making my Oreo brownies). Note, you will want to break the cookies apart in a separate bowl if you want to avoid gray funfetti Oreo bars; see my tip below for more on this.
- Sprinkles. I prefer jimmies or quins here instead of nonpareils, as nonpareils could dye the dough. If you are like me and can’t get enough sprinkles, check out my list of birthday desserts for my full collection of sprinkle-filled treats 🤩
- Chocolate chips. I like to use a blend of white chocolate chips and mini chocolate chips. Really though, you could use whatever you like!
- Eggs. Room temperature eggs work best here for creating the most cohesive dough. If you forget to set yours out ahead of time, I have a trick to quickly bring eggs to room temperature.
- Butter. We’ll melt and cool this before we get started. It’s very important that your butter be cool to the touch, otherwise you could melt your sugar and your funfetti Oreo bars will be greasy.
Remember, this is just an overview of the ingredients I used and why. For the full recipe please scroll down to the bottom of the post!
SAM’S TIP: If you want the sprinkles and chocolate chips to contrast in the dough, break the cookies and shake them in a fine mesh strainer to shake out the finest crumbs before adding them. This helps keep the bars from looking too muddy/dirty so the colors really pop!
How to Make Funfetti Oreo Bars
To make the dough, we’ll start by mixing together the cooled melted butter and sugar. Add the remaining wet ingredients, then set this aside while you whisk together the dry ingredients in a separate bowl.
Gradually stir the dry ingredients into the wet (I do this in 3-4 parts) until completely combined. You don’t need to worry about over-mixing here!
Fold in the cookie pieces, chocolate chips, and sprinkles, then evenly spread the batter into a parchment lined pan. Bake until the edges are just starting to turn light golden brown, about 32 minutes in a metal pan. You can do the toothpick test to check for doneness; look for it to come out clean or with moist crumbs when inserted into the center of the dough.
SAM’S TIP: Let the bars cool completely in the pan before cutting, otherwise things could get messy! Personally, I like to remove bars from the pan (lift up using the parchment paper) for the easiest and cleanest cutting. I do this with my brownies and rice krispie treats too–it makes things so much easier!
Frequently Asked Questions
Yes! They might not take as long to bake if you do this, but the recipe will still work. Also check out my blondie recipe if you like the idea of making this recipe without the Oreos!
If you cut the recipe in half, it should work just fine in a 9×9″ pan. The bake time will likely be different though, so keep an eye on it.
A number bakers expressed issues with the bars not cooking all the way through. The bake time was varying from oven to oven, and I needed to adjust the recipe for more consistent results.
Modifying the recipe to bake in a 9×13 pan and mixing the Oreos into the dough (as opposed to one thick layer) seemed to do the trick! As a plus, this new version is actually easier and you still get that same blend of Oreo flavor throughout each bar.
Related Recipes
If you enjoyed this recipe, give my cookies & cream bars a try next!
Enjoy!
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Funfetti Oreo Bars
Ingredients
- 1 cup (226 g) unsalted butter melted and cooled until no longer warm to the touch
- 2 cups (400 g) granulated sugar
- 2 large eggs room temperature preferred
- 1 ½ teaspoons vanilla extract
- 2 Tablespoons (30 ml) milk
- 2 ¾ cups (345 g) all-purpose flour
- 1 teaspoon baking powder
- 1 teaspoon salt
- 16 chocolate sandwich cookies broken into pieces
- ⅓ cup (60 g) mini semi-sweet chocolate chips
- ¼ cup (42 g) white chocolate chips
- ¼ cup (52 g) sprinkles
Recommended Equipment
Instructions
- Preheat oven to 350F (177C) and line a 13×9” metal pan (see note) with parchment paper, or lightly grease and flour the pan. Set aside.
- In a large mixing bowl, stir together melted (cooled) butter and sugar until combined.1 cup (226 g) unsalted butter, 2 cups (400 g) granulated sugar
- Add eggs, vanilla extract, and milk and stir well.2 large eggs, 1 ½ teaspoons vanilla extract, 2 Tablespoons (30 ml) milk
- In a separate, medium-sized mixing bowl, whisk together flour, baking powder, and salt.2 ¾ cups (345 g) all-purpose flour, 1 teaspoon baking powder, 1 teaspoon salt
- Gradually add dry ingredients to wet, stirring after each addition until completely combined.
- Add cookie pieces, chocolate chips, and sprinkles and stir well.16 chocolate sandwich cookies, ⅓ cup (60 g) mini semi-sweet chocolate chips, ¼ cup (42 g) white chocolate chips, ¼ cup (52 g) sprinkles
- Spread batter evenly into the prepared pan and bake in preheated 350F (177C) oven for 32-35 minutes. When finished baking, the edges will just begin to turn a light golden brown and a toothpick inserted into the center should come out clean or with a few moist crumbs.
- Allow to cool in pan before cutting and serving.
Notes
Nutrition
Nutritional information is based on third-party calculations and should be considered an estimate only. Actual nutritional content will vary based upon brands used, measuring methods, cooking method, portion sizes, and more.
Kyndall
Great and easy recipe. I doubled it for church party and had no problem. Thank you for always delivering awesome recipes. You’ve been a life saver!
Sam
I’m so glad everyone enjoyed these so much, Kyndall! Thank you for trusting my recipes. 🙂
Amber
First, I love all your recipes! I have made many and they always turn out perfect! Do you think these would work without the Oreos? I’m assuming they would. I don’t want to run out to the store, but I want to make Funfetti bloodies.
Sam
Hi Amber! Sorry for the delayed response! Yes this will work without the oreos, it may just need to bake for less time. 🙂
Michelle
These looked wonderful and I made them for a friend’s birthday – started getting worried when mixing the wet and dry. The batter was VERY thick consistency like a firm cookie dough. I was able to spoon the batter into the pan and poke it around to spread out but this was the most time consuming part of the recipe as the dough was so thick and sticky. After baking for less than 30 min, the bars were already golden around the edges and done in the center so I removed from oven.
Disappointed how dry the bars turned out! Not sure if anyone else encountered this but (minus bake time) I followed the recipe to the T. The bars from the middle of the pan were okay, but the bars all around the perimeter were not at all worth the calories even though they looked delicious…! I bake a lot, and this recipe would do better with some tweaking imo.
Sam
Hi Michelle! It sounds like one of two things probably happened (or maybe a bit of both).
1) How did you measure your flour? If you used cups, by chance did you scoop the flour directly into the measuring cup? This could have packed it in (the best way to measure flour is to stir it, spoon it into the measuring cup, then level it off). If it was scooped directly into the cup, it was most likely over-measured which would result in a dough that’s too stiff like it sounds like you have and could make them dry.
2) If the flour wasn’t the problem, I would guess that your oven temperature is probably running hotter than it is telling you. If your bars were golden and finished baking after just 30 minutes I”m wondering if your oven temperature is accurate. It could be running a lot hotter than it’s reading, resulting in over-baked, dry bars. I’d recommend getting one or two inexpensive oven thermometers and hanging them in your oven to see if the temperature is accurate.
This recipe is pretty well tested and I’m confident it’s right as written (I bake a lot, too), but I hope those tips are helpful!
Lauren
Will it work with a box of funfetti cake mix!?!
Sam
It would take a little bit of tweaking, and it’s hard for me to say exactly how having not tried it.
Emily
I modified them for Halloween by using Halloween Oreos and orange and black sprinkles. They are too scrumptious, and you’re absolutely right about nibbling on some while they’re still warm. I thought about drizzling some dark chocolate over the tops of them, but ultimately I felt they were perfect the way they were. A triumph, I say!
Sam
I love the orange and black Halloween theme idea! I am so glad you enjoyed them. 🙂
Amber
As a general rule, how do I modify bake times/temps when using a convection oven?
Sam
I’m sorry Amber I do not have any experience with a convection oven. 😟
Courtney
Are these really supposed to be made with a 9×9?? I made these last night and the flavor is great, BUT they were super thick. I might use a 12×12 next time.
Sam
Yup they are thick bars! Feel free to bake in a larger pan (13×9 would work) but the bake time will vary.
Chantalle
I tried them in the 9 x 9 pan at 350F and after an hour and 20 minutes they still were not cooked in the centre??? Not sure if my oven is doing something weird or not (but the cinnamon buns I made the same day turned out fine)- next time would try with a bigger pan I think.
Sam
Hi Chantalle! I am so sorry you had problems. This definitely sounds like an oven issue. Sometimes mine works great half the day and then quits for a little while then works again. Do you happen to have thermometers in your oven to monitor your oven temperature?
Courtney
Should the pan really be 9×9?? The flavor is awesome but they were SUPER thick!
Erin
Hey! I’m about to make these soon 🙂🙂 did you make a video?
Sam
I did! You can watch it here: https://www.facebook.com/Sugarspunrun/videos/933351586821012/
Sarah
I have these baking in the oven now! Super easy…except I forgot the vanilla extract!! How will this affect the flavor?? I’m making them for a friends birthday and don’t want to bring something if they will be ruined…
Sam
The vanilla definitely would make it better, but with all of the other add-in — the sprinkles and Oreos — I think you’ll be just fine flaor-wise and they’ll still be good!
Shelby
Very easy and very good! A little hard to spread in the parchment but it made cleanup so easy! My daughter has requested I make these again for her birthday instead of getting her a cake!
Sam
So glad you enjoyed them!
Emma @ Lights, Camera, BAKE!
These bars are not only aesthetically appealing but they also sound amazing! I love these, definitely on my list to make…. ASAP!
Sam
Thank you so much, Emma! 🙂
Shelby @ Go Eat and Repeat
Yikes, emergency trip does not sound fun! These bars though are gorgeous. They really are a party bar! I definitely need to try them!
Sam
Thank you so much, Shelby! They helped make up for the not-so-fun urgent care trip 😉
Jess @ Sweetest Menu
Get out of town! I LOVE these Sam! They are gorgeous with all those sprinkles and so many Oreo pieces going everywhere. I need these in my life. Pinned!