I declare these the BEST Chocolate Chip Blondies with their buttery with a slightly chewy fudgy texture. This recipe is easy to make all in one bowl (no mixer required) with basic staple ingredients and it makes blondies that are moist with rich butterscotch flavor packed with dark chocolate in every bite. Each bite is pure bliss and a chocolate lover's dream. They taste very similar to chocolate chip cookies, but they are even easier to make because there's no need to chill the dough, scoop the dough or roll into balls. Just spread the batter into the pan and bake them off. If you love making blondies, be sure to check out my Brown Butter Hazelnut Blondies and my Salted Espresso Chocolate Chunk Blondies recipe.

WHY THIS RECIPE WORKS
- Easy to make - this is a super easy no-fuss recipe that uses basic pantry ingredients.
- No mixer - you can make this recipe with just a bowl and a whisk! You don't need a mixer.
- Chocolate chip blondies - a whole cup of chocolate chips makes sure that there are little puddles of chocolate in every bite.
- Chewy blondies - these blondies have a fudgy moist texture that is irresistible.
- Rich butterscotch flavor - the buttery brown sugar flavor is perfectly balanced with salt so they are not too sweet.

WHAT ARE BLONDIES AND HOW ARE BLONDIES DIFFERENT THAN BROWNIES?
The main difference between blondies and brownies is a major ingredient: chocolate. Brownies are made with chocolate or cocoa powder, while blondies do not have melted chocolate or cocoa powder in the batter. The main flavor in blondies is vanilla with caramel undertones from brown sugar.
The method for making them is similar in that the eggs, sugar and melted butter are combined before mixing in the dry ingredients. Although I'm a brownie fan forever (these are the BEST homemade brownies), a blondie can also hit the spot. These also have that shiny top just like my Perfect Shiny Crust Fudge Brownies.

INGREDIENTS FOR BEST CHOCOLATE CHIP BLONDIES
Here are some notes about the ingredients. For a full list of ingredients, check out the recipe card at the bottom of the page.
- All purpose flour - regular all-purpose flour is perfect to make chewy blondies, just like chewy chocolate chip cookies. I only ever use unbleached flour.
- Unsalted butter - there's no substitute for butter in these chocolate chip blondies. It gives them a wonderful butterscotch flavor and chewy texture.
- Pure vanilla extract - vanilla is the basis of the flavor of blondies and it is very important to use one of high quality. I like this Madagascar Bourbon Vanilla extract.
- Granulated sugar - simple fine white granulated sugar keeps these blondies moist.
- Brown sugar - you can use light brown or dark brown sugar. I like the added flavor the molasses gives with dark brown sugar and it contributes to their soft fudgy texture.


- Egg - 1 whole egg will provide majority of the structure in these blondies and 1 egg yolk is the key to ensuring they have a fudgy texture instead of being cakey.
- Salt - don't skip this otherwise the these blondies will be too sweet.
- Dark chocolate - any type of dark chocolate between 45% and 85% cocoa solids will work. I prefer bittersweet chocolate with 70% cocoa solids or and these semisweet chocolate chips are great for the cookie dough.

STEP BY STEP INSTRUCTIONS: HOW TO MAKE BLONDIES
- STEP 1). Melt butter gently over very low heat until JUST melted and creamy looking. You can do this over the stove in a saucepan or in the microwave. It shouldn't get too hot. What I do is place cold butter in a saucepan and heat it until all but a bout 1 tablespoon of butter is melted, then I remove it from the heat and let the residual heat gently melt the rest of it.
- STEP 2). Combine butter and sugar. Pour just melted cool butter into a large bowl. Add brown sugar and granulated sugar and whisk to combine.
- STEP 3). Mix in eggs. Add the whole egg and whisk it in until well blended and the mixture looks glossy. Add the egg yolk and vanilla and mix it in.
- STEP 4). Add dry ingredients. Combine flour, baking powder and salt in a medium bowl and whisk to blend evenly.
- STEP 5). Fold in chocolate chips. Add it to the butter mixture and fold it in. Just before all of the flour is incorporated, add the chocolate chips (reserving just a handful of chocolate chips (about 1 oz) for topping) and fold them in until they are evenly distributed. Do not over-mix. Spread the batter evenly into the prepared pan. Sprinkle reserved chocolate chips on top.
- STEP 6). Bake for 23-28 minutes or until the blondies are golden brown, set on the edges and have puffed up. The middle will still be slightly soft and they will continue to cook as they cool. Transfer pan to a wire rack to cool completely, then slice into squares.

EXPERT BAKING TIPS
- Measure flour accurately. Too much flour leads to dry and crumbly blondies so be sure to use a scale or use the spoon and sweep method without packing the flour into the measuring cup.
- Use room temperature eggs. Cold eggs will make it difficult to dissolve the sugar which is what helps create the glossy top.
- Watch the baking time. These blondies will not take long to bake and over-baking will definitely create a drier texture. A skewer should come out with a few moist sticky bits attached but not wet batter.

RECIPE FAQ
I use semisweet chocolate chips or bittersweet chocolate which offsets the sweetness of the blondie batter.
Blondies get their chewiness from the right amount of sugar, and a higher ratio of sugar:butter, as well as an additional egg yolk that adds fat and protein without excess moisture which would make them too cakey. More sugar gives a chewier texture since it is a humectant, which means it is a functional ingredient that binds moisture.
It's all about dissolved sugar and also the right concentration of sugar. Whisk the sugar into the eggs first. This will help it dissolve a bit, and to help this along, always use room temperature (not cold) eggs. The warmer temperature helps sugar dissolve. TIP: to bring eggs to room temperature quickly, submerge them in warm water for 10 minutes.

If your blondies turn out dry and cakey, then it is most likely because they are over-baked. These blondies are ready when a skewer inserted into the center comes out with a few moist sticky crumbs attached - not wet batter, and NOT clean. If the skewer is clean then the blondies are over-baked and if the skewer has wet batter then they are still raw.
The number one reason why these would turn out dry is if they are over-baked. Check on the blondies at 20 minutes. Also, take care to measure the flour accurately.
Blondies keep really well at room temperature as long as they are stored in an airtight container to prevent drying out. If you plan to keep them for more than a couple of days, then store them in the fridge.
If you love baking bars like this, check out these recipes!
Triple Chocolate Brownies Fudgy Grain Free Brownies Chocolate Chunk Pistachio Blondies Fudgy Buckeye Brownies Tiramisu Blondies The BEST Small Batch Fudge Brownies Homemade Cosmic Brownies Recipe!More bar recipes please!
Looking for more easy squares and bar recipes? Try these:
Video
Chocolate Chip Blondies
Ingredients
- ½ cup (113g) unsalted butter just melted so it is still creamy-looking
- ⅔ cup (145g) packed dark brown sugar
- ¼ cup (50g) granulated sugar
- 1 large egg, at room temperature
- 1 large egg yolk, at room temperature
- 1 ½ teaspoon (7ml) pure vanilla extract
- ¼ teaspoon baking powder
- ½ teaspoon salt
- 1 cup plus 2 tbsp (160g) all-purpose flour
- 1 cup 170g semisweet chocolate chips
Instructions
- Preheat the oven to 350°F. Line an 8x8-inch square metal baking pan with parchment paper leaving a 2-inch overhang at each side and secure the sides down on the edge of the pan with ¾-inch binder clips.
- Melt butter gently over very low heat until JUST melted and creamy looking. You can do this over the stove in a saucepan or in the microwave. It shouldn't get too hot. What I do is place cold butter in a saucepan and heat it until all but a bout 1 tablespoon of butter is melted, then I remove it from the heat and let the residual heat gently melt the rest of it.
- Pour just melted cool butter into a large bowl. Add brown sugar and granulated sugar and whisk to combine. Add the whole egg and whisk it in until well blended and the mixture looks glossy. Add the egg yolk and vanilla and mix it in.
- Combine flour, baking powder and salt in a medium bowl and whisk to blend evenly. Add it to the butter mixture and fold it in. Just before all of the flour is incorporated, add the chocolate chips (reserving just a handful of chocolate chips (about 1 oz) for topping) and fold them in until they are evenly distributed. Do not over-mix. Spread the batter evenly into the prepared pan. Sprinkle reserved chocolate chips on top.
- Bake for 23-28 minutes or until the blondies are golden brown, set on the edges and have puffed up. The middle will still be slightly soft and they will continue to cook as they cool. Transfer pan to a wire rack to cool completely, then slice into squares.











Sena
The best recipe ever ı’ve ever made
christina.marsigliese
Thanks Sena!
chris
i loved it so much! but is there any way to make it less sweeter?
christina.marsigliese
Hi Chris! You can but it will change the texture.
Charlotte
So delicious! Easy to make and done in 23 minutes 😊
christina.marsigliese
Thank you Charlotte! 🙂
Nichole
Absolutely delicious recipe! I baked them in a 9x9 pan. They were a little thinner and chewier. Perfect with a scoop of vanilla ice cream!
christina.marsigliese
Thank you Nichole! Glad you enjoyed them 🙂
Kitcat
You have a lot of great recipes! Thanks for sharing and making me a better baker!
christina.marsigliese
Thank you so much Kitcat! I'm so glad you have been enjoying my recipes 🙂
Kate Costin Thompson
I was craving a sweet treat but didn’t want to mess with multiple pans of cookies (feeling lazy on a cold winter Sunday night 🤣). These were quick, easy, so good and chewy with great butterscotch/toffee flavor. I’lil definitely make them again!
christina.marsigliese
Thank you Kate! I'm so glad you found the recipe easy and delicious 🙂
Taylor
These are absolutely delicious! The texture and flavour are like the centre of the best chewy cookies, but are super quick and easy to pull together. Scientifically Sweet has fast become my go-to baking recipe site.
christina.marsigliese
Thank you so much Taylor! I really appreciate your feedback.
Mardell
I have been using more of the mini chocolate chips lately in recipes (more on preference). Always wondering if I am using the correct amount when I make the swap from regular chocolate chips to mini. My question is: Should I be using the same measurement/weight given in recipes when I do the swap?
Thank You! Love your recipes!!
christina.marsigliese
You are welcome Mardell! Generally with chips of different sizes there should not be any issues replacing with the same weight. Thanks for the comment!
Tony Koshansky
Should the melted butter be cooled to room temperature or just lukewarm?
christina.marsigliese
Hi Tony! It's ok if the butter is a bit warm, just not hot.
Bella
Great recipe. Perfect texture.
christina.marsigliese
Thanks Bella!
Michelle
Delish! You KNOW it's a great one when it brings 3 teen guys out their rooms to enjoy. Brown butter makes these extra yummy!
christina.marsigliese
Lol! Thanks Michelle!
Jess
I have done A LOT of baking and tried quite a few blondie recipes, this one really takes the cake. 20/10 my new go to recipe!
christina.marsigliese
Thank you for the review Jess! I'm so glad you enjoyed the blondies.
Felicity
Best classic blondie recipe I’ve tried. 10/10
christina.marsigliese
Thank you so much Felicity! Glad you enjoyed the recipe.
valerie
Made with my granddaughter and it was fun to teach her how to measure accurately and what “fold” and “whisk” mean! So simple and so delish , she ate 3! made more the next morning to share with friends. such a simple delish recipe, can’t wait to try with vanilla ice cream !
christina.marsigliese
Thank you Valerie! I am so glad your granddaughter enjoyed them.
Nicole
The perfect Blondie recipe. Tried it on a night when I wanted to bake a sweet treat and it hit the spot!
Question is there any particular reason to use baking powder for this recipe instead of soda? I'm making the espresso Blondies next and didn't know if I needed to make a store run
christina.marsigliese
Hi Nicole, great question! Baking powder will allow them to bake evenly and level. If you use baking soda instead, it will allow them puff but they will sink as they cool.
Michal
Hi,
Looks great. Was looking for a good recepie for sometime.
Do you think it will work if I replace the flower with almond flower?
Thanks!
christina.marsigliese
Hi Michal, sorry this recipe has only been tested with all purpose flour.
Kris
My family love these blondies!!!
Do you think it would work if I doubled the batch and bake them in a bigger pan?
Thanks for the help and great recipes.
Kristen
christina.marsigliese
Hi Kris, glad your family enjoyed the recipe! Yes, you can double the batch and bake in a larger pan.
Joanne
They’re perfect! My family loved them and they keep asking for more.
indira
Another excellent receipe from Scientifically Sweet. The instructions were easy to follow and the end result tastes great, as always. Thank you for sharing this receipe for free!
Tracy
I had never had a blondie before I made these, but these were one of the best things I have ever had! Delicious flavor and great texture!
christina.marsigliese
Thanks so much Tracy!