This foolproof recipe has everything you love about your favorite homemade chocolate chip cookies, but baked in a 9×13 pan and no mixer or chilling of the dough needed! An extra egg yolk and brown sugar leads to their soft and chewy texture, and each bite is full of rich butter flavor and loaded with chocolate chips. Whenever I show up with this treat at a potluck or family gathering, these bars are the first thing to disappear!

“I’ve made these several times now and they are excellent, just excellent! They are a hit with everyone! Easy and over-the-top good!”
—Melody

baking soda is key to the chewy texture
Yes, this is a common baking ingredient, but I love what it does to these bars! You see, when baking soda mixes with brown sugar (which has acid from the molasses), it releases little bursts of carbon dioxide gas (our youngest daughter Tessa would appreciate this little bit of nerdy science as she’s currently in year 2 of her bio-chem degree). This causes the pan of bars to puff up slightly while it’s baking, then sink a bit as it cools. Which is GOOD – this helps to give you that incredible dense, chewy center.
OH, AND ONE LAST THING: DO NOT OVER-BAKE!
Yes, that’s my yelling voice! If your goal is to have the softest, chewiest chocolate chip cookie bars on the planet, it’s VERY IMPORTANT to not over-bake. I’d even go so far as to say, for the ultimate soft bars, slightly under-bake them!


Chewy Chocolate Chip Cookie Bars (no mixer!)
Ingredients
- 2 cups + 2 tablespoons all-purpose flour
- ½ teaspoon Morton kosher salt
- ½ teaspoon baking soda
- 12 tablespoons unsalted butter, gently melted and then cooled to room temperature
- 1 cup packed light brown sugar
- ½ cup sugar
- 1 large egg
- 1 large egg yolk
- 2 teaspoons pure vanilla extract
- 2 cups semi-sweet chocolate chips, plus a bit more for sprinkling over the top of the dough (I recommend Guittard semisweet chocolate chips)
- sea salt flakes, optional for sprinkling over the top (I recommend Maldon Sea Salt Flakes)
Instructions
- Adjust oven rack to lower-middle position. Preheat oven to 325°F. Lightly spray a 9" x 13" metal baking pan with non-stick spray. For super clean cuts, see Notes below.
- In a medium bowl, whisk together flour, salt, and baking soda; set aside.
- In a large bowl, whisk together melted butter, brown sugar, and sugar until combined. Add egg, egg yolk, and vanilla, and whisk until well combined.
- With a rubber spatula, fold dry ingredients into the wet ingredients. When about half-way combined, add chocolate chips and continue to fold until just combined. Do not over-mix.
- Transfer dough to prepared pan. Dough will be thick and sticky. Press evenly into pan using a spatula and/or your fingertips. See Notes below for more pressing tips.
- If desired, sprinkle a few more chocolate chips over the top, pressing them in a bit. It's also fun to sprinkle M&M's over the top – the mini M&M's are our first choice!
- Bake for about 23 minutes or so, or until top is light golden brown and slightly firm to the touch. For the chewiest bars, do not over-bake. I even recommend to slightly under-bake!
- Remove pan to wire cooling rack. Optional: Sprinkle some sea salt flakes over the top IMMEDIATELY (so they stick) after the pan comes out of the oven.
- Let cool to room temperature and then cut into individual bars.
Notes
- Other chocolate. Try milk chocolate, dark chocolate, or white chocolate chips — or a combination. Or chop up your favorite dark chocolate bar for a more indulgent adultified treat.
- Candies. Our daughters like to sprinkle mini M&M’s over the top.
- Nuts. Throw in some chopped walnuts or pecans for some nutty crunch. I recommend using roasted, salted nuts for the best flavor and texture.
- Counter – To preserve the soft texture, leave the cooled bars in the pan, covered tightly, and store them on the counter for up to 3 days.
- Fridge – Store the bars in the pan, covered tightly, in the fridge for up to 5 days.
- Freezer – Place bars in an airtight, freezer-safe container, then store in the freezer for up to 3 months. Thaw the bars in the fridge before serving.
Nutrition Information:

For the memory book: This photo was taken while staying with my sister’s family in Florida in 2019, when we celebrated our daughter Hatti’s and my dad’s shared birthday with – yes, you guessed it – these chewy chocolate chip cookie bars!








These were shared in an egg allergy group I’m in. The original poster subbed 3/4 of an 8 oz block of cream cheese and 2-3 tablespoons spoons of water for the egg and yolk and they turned out amazing! We are always looking for great eggless recipes and this one converts beautifully! My 3 and 6 year old both have anaphylactic egg allergies and sometimes it’s hard finding recipes for “everyday things”. It makes my Mama Heart happy to be able to give my kids something as simple as these.
I love making these. I am wondering if the recipe could be used to make it in the form of cupcakes.
absolutely delicious!!! i have never had a chocolate chip cookie recipe come out so good!
I made these last night and they came out amazing! Thank you for sharing.
So glad you liked, Jessica! :)
These bars are amazing! My go-to recipe now instead of chocolate chip cookies!
These bars are amazing!!! Thank you for the recipe!
These are amazing!!! Thank you for the recipe!
So glad you liked this recipe, Ruthie! :)
Could I replace some of the flour with some oatmeal?
Love this recipe! I’ve made these several times and they always turn out great. I also tried to make these dairy free, but those turned out a bit wet and got darker than the original recipe.
So glad you love this recipe!! :)
I baked these for the first time today and they are delicious. I used regular sized m&ms instead of chocolate chips. My son loved them and they will definitely be a regular snack in my house….thank you!!!
From Cathie:
Can I add dried cranberries to the mix? Maybe swap out some of the chocolate chips? We LOVE them!
These are perfect and super easy and fast. But most importantly they are very good! My new chocolate chip cookie bar recipe!
Very easy and good.
Very easy to make and super delicious! My whole family loved it
Delicious!
Yay!! :)
In the oven now@
Does this really use 12 tablespoons of butter?
Hi Jennifer – the recipe card is correct.
Hi, can I bake them in a 9×9 inch pan? Do I need to change anything?
I’m trying them in an 8×8 ,I will let you know.
These cookie bars were amazing! They took no time to make, and used ingredients
I already had in the house. I under baked them a bit. They were very easy to cut and serve.
Thank you for such an easy and delicious recipe!
Hi Naomi – I’m so glad you liked this recipe! Thanks for coming back to let me know! :)
This recipe was spot on for this cookie bar. The only exception was the baking time. At 23 minutes, the bars were not at all golden on top. I set the timer for another 4 minutes and they came out just like your photo. My oven is consistent and exact in temperature. I especially like adding more chips on top as well as the sea salt! This recipe is a keeper.