kit kat cookie bars.

by Janetha on September 8, 2013

in recipes

the other day marshall and i saw a commercial for these new little kit kat bites.

IMG 6939

i immediately declared i needed to go buy them and put them in a baked good.

so i did.

IMG 6973

24 day challenge be damned, it’s my kitchen and i’ll bake if i want to! i am actually quite amazed that i didn’t have even a lick of the batter. cookie dough is my favorite, that took some serious willpower. yup, patting myself on the back here. but you better believe these beauties will be made again once the challenge is over!


kit kat cookie bars
prep time: 10 min, bake time: 25 min
yield 18-24 bars or 2 dozen cookies*

IMG 6935


  • 3/4 cup salted butter
  • 3/4 cup unrefined granular sugar
  • 1 cup brown sugar
  • 2 large eggs
  • 2 tsp vanilla bean paste or extract
  • 3 cups all purpose flour
  • 3/4 tsp baking soda
  • 3/4 tsp salt
  • one 8 oz bag mini kit kats plus more for topping (if you want)


  1. preheat oven to 350* F.
  2. using a hand or stand mixer, cream together butter and sugars.
  3. add eggs and vanilla, mix well.
  4. sift together four, soda, and salt in a separate bowl.
  5. slowly add flour mixture to the mixing bowl until fully incorporated.
  6. fold in kit kats.
  7. spread dough evenly in a 9×13 pan**/*** sprayed with cooking spray. 
  8. top with additional kit kats if that’s your thing.
  9. bake for 25 minutes until edges are golden brown.
  10. let cool completely, slice into squares, and enjoy!

*these can also be made as cookies, simply swap out the baking pan and scoop 2 TB sized balls onto a cookie sheet. bake for 11-ish minutes.

**i use THIS PAN for the bars (great for brownies, too!) which allows them to be sliced before baking into perfect sized bars. i love this pan so much!! i highly recommend it. (pic of prebaked/postbaked bars)

Screen Shot 2013 09 08 at 8 36 10 PM

***for thinner bars, you can use a cookie sheet and press the dough out all over the sheet. just make sure you reduce the baking time.. i would start with 15 minutes and keep my eye on them for the remaining time until they are golden brown.

i love how these are thick and chewy like brownies, but doughy like cookies! they have the perfect consistency.

IMG 6999
 the bars are pretty filling if you make them into 18 bars.. you will definitely need a glass of milk to wash one down. 

IMG 6992

the possibilities of mix-ins are endless for these! if you don’t like kit kats (then you are crazy..) you could use twix, reese’s PB cups, or any other mini candy! 


1. what is your favorite candy bar?

2. quick! pick! cookies or brownies?

xo. janetha g.

Print Friendly
Corrie Anne September 8, 2013 at 10:44 pm

Those are adorable!! And what an awesome pan!! I need that for sure. I’d choose brownies over cookies, but cookie dough over brownies! Kevin and I both strangely love Butterfingers! And the mint 3 musketeers!

Kaylie @Fitness Moves You September 8, 2013 at 10:45 pm

The whole crazy-for-not-loving-kit-kats?? I totally agree- Kit Kats are the best!!! I also love Reese’s PB Cups, though. :)

Lili September 9, 2013 at 12:09 am

Those look sooo good. Love the owl glass too. Where did u buy the pan ?

Jan @ Sprouts n Squats September 9, 2013 at 1:59 am

OMG Kitkats are by far my favourite!!! I hope they bring those bites out to Australia. I think I love brownies by far but if those cookies are raw as in cookie dough then cookies win :)

Those bars look amazing!

Lisa September 9, 2013 at 3:26 am

Those bars look delicious!! Send some to NJ, PLEASE??? :-)

Linz @ Itz Linz September 9, 2013 at 4:44 am

wow these look AMAZING!! so thick and delicious and mmm let me go wipe the drool off my face!

Danielle @ It's A Harleyyy Life September 9, 2013 at 4:58 am

I love the minis– I also saw they have snickers! (:

Madison September 9, 2013 at 5:44 am

Favorite candy? REESES.

Cookies or brownies? BROWNIES.

Momma b September 9, 2013 at 5:52 am

Whoa those may be another little pillow of heaven! I’m assuming they tasted great!!

Still a Hershey chocolate bar girl….I’ll be there in a few days….yum!!!

Love you sweetie xo!!!

Sam @ Better With Sprinkles September 9, 2013 at 6:11 am

I think I need to find myself one of those pans, it looks so useful! I’m definitely more of a brownie person when it comes to baked goods…but I definitely have a self-control problem around cookie dough :-p

MizFit September 9, 2013 at 6:21 am

Id be mom of the year if I made these for our school bakesale :-)

Sophie @ life's philosophie September 9, 2013 at 6:47 am

Favorite candy bar is Take 5. I would take both in the same dessert. A cookie brownie is one of my favorites. If I absolutely had to choose though, I would go for a brownie. Only if it is super fudgy though.

betty (the sweaty betty) September 9, 2013 at 6:47 am

there’s NO WAY I could bake with cookie dough during the challenge!!! raw eggs or not.. I will eat more dough than I do cookies. congrats to you! how are you liking it?

twix! best candy bar ever! and cookies always win.

Janetha September 9, 2013 at 8:21 am

It was seriously so hard. Cookie dough is my favorite. I am loving the challenge! Down 4 lbs after a week and I feel really good. TWIX IS MY FAVORITE TOO!!!!!!!!!!!!!!!!!

Ashley @ My Food N Fitness Diaries September 9, 2013 at 9:17 am

Cookies vs. brownies is one of the toughest decisions ever. I don’t think I could do it. Can I just choose both? :)

I need to make these for Cody! He LOVES Kit Kat Bars!

Favorite candy bar is Reese’s – no doubt!

Nikki @ grabyourkicks September 9, 2013 at 9:37 am

I’m been loving rolos lately. I made HRG’s rolo cookies and they’re addicting!

Erica September 9, 2013 at 11:06 am

YUM! What a fun use for those little bars! I like any dark chocolate bar. Cookies!

Christin@christinjoyful September 9, 2013 at 11:46 am

Gonna use this recipe with reese’s minis for my reese-aholic hubby! :)

candice s September 9, 2013 at 12:20 pm

I don’t know how you bake like this and stay strong. The pictures alone made me drool. Congrats on the results of the challenge.
Favorite candy bar: Whatchamacallit
Cookies!! Cookies are my all time favorite treat ever.

Katie September 9, 2013 at 1:36 pm

Oooh man, these are right up my ally. I want them for lunch, and I don’t even like candy bars. But I look cookies and brownies both…I could never pick a favorite.

Sinead September 9, 2013 at 1:54 pm

Brownies every time!

Sarah September 9, 2013 at 6:23 pm

I just stumbled onto a bag of these and didn’t know want to do with them! (Other than shovel the entire bag into my mouth in one sitting) These looks delicious, thanks for the recipe!

Krissie J @ Philly Nerd Girl September 10, 2013 at 8:02 am

Favorite candy bar is Twix, though Kit Kat is close behind. And definitely brownies. I’m so making these to bring into work soon!

Laura @ RunningJunkie September 10, 2013 at 11:09 am

Kit Kats are seriously good, but Heath bar as my heart for the ultimate mix in.

Cookies. Crunchy ones. Hands down.

Elizabeth September 10, 2013 at 11:54 am

Snickers are definitely my favorite, love the new snickers bites! And I would say turtle brownies! I have a thing for caramel!

Annette@FitnessPerks September 10, 2013 at 3:05 pm

Sweet pan!! These look fab :)

Jay Scott September 10, 2013 at 5:02 pm

Looks fantastic! I’m a huge cookie fan and love a good cookie/candy combo.

I love kit kats, but my favorite is Reese’s Peanut butter cups. I bought some of the mini’s (they are tiny little things) and every saturday night I sit down and have about 10 or so. It’s a tradition now I think!

By the way – I did say I just do this once a week or so – haha.


Brandi September 11, 2013 at 5:10 am

These look delicious! I just baked some cookies using butterfingers…..;) So good!

Andrea September 14, 2013 at 11:47 am

salted butter?? Light or dark Brown sugar?

Andrea September 14, 2013 at 12:40 pm

3/4 salted butter is 1.5 sticks right?

Janetha September 15, 2013 at 3:40 pm


Comments on this entry are closed.

Previous post:

Next post:

FTC Disclosure. Disclaimer.