Chocolate Chip Cookie Bars
All the joy of a warm chocolate chip cookie. None of the scooping.
That is the whole pitch, and it is enough to win me over every single time.
These bars take everything you love about a classic chocolate chip cookie and bake it into one thick, chewy pan.
Soft, gooey centers. Golden, slightly crisp edges. Pockets of melty chocolate in every bite.
No rolling dough into balls. No rotating trays. No standing at the oven for batch after batch.
You mix it all in one bowl, press it into a pan, and bake. That is the entire job.
This is the dessert I reach for when a cookie craving hits and I have zero patience for fuss.
It feeds a crowd, comes together in about 15 minutes of work, and disappears faster than anything else on the table.
So grab one bowl and a pan, and let me show you how to make the easiest chocolate chip cookies of your life, in bar form.
Why These Bars Win
Let me share the little secrets that make these so chewy.
It starts with melted butter.
Melted butter, instead of softened, gives these bars that dense, soft, chewy texture rather than a cakey one. It also means no mixer and no waiting for butter to soften.
Then there is the extra egg yolk and a spoonful of cornstarch.
That bonus yolk adds richness, and the cornstarch keeps the centers soft and tender for days. Together they are the chewy-bar dream team.
Here is the part that surprises people.
You do not need to chill this dough or scoop a single cookie. You just press it into a pan. That makes these faster than regular cookies while tasting just as good, if not better.
One bowl, no mixer, no chill. Big chewy payoff.
What You’ll Need
Here is everything for one 9×13 pan, about 24 bars.
For the cookie bars:
- 1 cup (226 g) unsalted butter, melted and slightly cooled
- 1 cup (200 g) packed brown sugar
- 1/2 cup (100 g) granulated sugar
- 1 large egg, at room temperature
- 1 large egg yolk, at room temperature
- 2 teaspoons vanilla extract
- 2.5 cups (315 g) all-purpose flour
- 2 teaspoons cornstarch
- 1 teaspoon baking soda
- 1/2 teaspoon salt
- 2 cups semi-sweet chocolate chips, divided
For finishing:
- Flaky sea salt (optional)
A note on the chocolate. Semi-sweet chips are the classic, but chopped chocolate bars melt into gorgeous gooey puddles. A mix of chip sizes gives you the best of both.
Pro Tips Before You Start
These small moves are what turn a good pan of bars into an unforgettable one.
1. Use melted butter.
Melted butter is the key to that soft, chewy texture and means no mixer required. Let it cool slightly so it does not scramble the eggs.
2. Do not skip the egg yolk or cornstarch.
That extra yolk and the cornstarch are what keep these bars rich, soft, and chewy instead of dry or cakey.
3. Do not overmix.
Stir the flour in just until it disappears. Overmixing builds gluten and makes the bars tough rather than tender.
4. Underbake slightly.
Pull the pan when the edges are golden and the center looks just set, even slightly underdone. They finish cooking as they cool and stay gooey.
5. Cool completely before cutting.
This is the hardest step, but it matters. Cooling lets the bars set into that perfect chewy texture and gives you clean, neat squares.
Tools You’ll Need
Simple gear, and only one bowl to wash.
- 9×13 inch baking pan
- Parchment paper
- Mixing bowls
- Whisk
- Spatula or wooden spoon
- Measuring cups and spoons
Substitutions and Variations
These bars are a blank canvas. Here are my favorite spins.
Mix up the chocolate.
Use a blend of semi-sweet, milk, dark, and white chocolate chips for a layered chocolate flavor.
Add nuts.
Fold in a cup of chopped walnuts or pecans for crunch and a toasty flavor.
Throw in candy.
M&Ms, toffee bits, or chopped peanut butter cups all work beautifully stirred into the dough.
Brown the butter.
For a deeper, nuttier flavor, brown the butter first and let it cool before mixing.
Finish with salt.
A sprinkle of flaky sea salt on top right after baking makes the chocolate flavor pop.
Here is a quick cheat sheet:
| You Want | Try This |
|---|---|
| Layered chocolate flavor | A mix of chip types |
| Some crunch | Chopped walnuts or pecans |
| A candy twist | M&Ms or toffee bits |
| Deeper flavor | Brown the butter first |
| A flavor pop | Flaky sea salt on top |
Make-Ahead Tips
These bars are a planner’s dream.
You can make the dough ahead and keep it covered in the fridge for a couple of days, then press and bake when you are ready.
Baked bars keep well too, so you can make them a day before a party. The chewy texture actually settles in beautifully overnight.
For longer storage, freeze the baked bars or the raw dough.
That means a chocolate chip fix is always within easy reach.
How to Make Chocolate Chip Cookie Bars
Have everything measured before you start. This comes together fast.
Step 1: Prep the pan
Preheat your oven to 350°F (175°C). Line a 9×13 inch pan with parchment paper, leaving an overhang to lift the bars out later.
Step 2: Mix the wet ingredients
In a large bowl, whisk the melted butter, brown sugar, and granulated sugar until smooth and no lumps remain.
Step 3: Add the eggs and vanilla
Whisk in the egg, egg yolk, and vanilla until the mixture is glossy and combined.
Step 4: Add the dry ingredients
In a separate bowl, whisk the flour, cornstarch, baking soda, and salt.
Add to the wet ingredients and stir just until combined. Do not overmix.
Step 5: Fold in the chocolate
Fold in 1.5 cups of the chocolate chips, saving the rest for the top.
Step 6: Press into the pan
Press the dough evenly into the prepared pan. Lightly greased fingers or a spatula make this easier.
Step 7: Top and bake
Sprinkle the remaining chocolate chips over the top. Bake for 22 to 28 minutes, until the edges are golden and the center looks just set.
Step 8: Cool and cut
Sprinkle with flaky salt if using. Let the bars cool completely in the pan, then lift them out and cut into squares.
Try one slightly warm with a scoop of ice cream. You earned it.
A Few Extra Details
Rough nutrition, per bar (makes about 24):
| Nutrient | Approx. Amount |
|---|---|
| Calories | 220 |
| Fat | 11 g |
| Carbs | 29 g |
| Protein | 2 g |
| Sugar | 19 g |
These are estimates and will shift with how large you cut the bars and your chocolate.
Diet swaps:
- Gluten-free: a 1:1 gluten-free baking flour works well in this dough.
- Dairy-free: use a plant-based butter and dairy-free chocolate chips.
- Lower sugar: trim the granulated sugar slightly and keep the brown sugar for moisture and chew.
Pairing suggestions:
A cold glass of milk is the obvious soulmate. A scoop of vanilla ice cream turns a warm bar into a sundae. Coffee balances the sweetness for the grown-ups.
A built-in time-saver:
Melt the butter in the microwave and mix everything by hand in one bowl. No mixer to drag out, no dough to chill, and only one bowl to wash.
Leftovers and Storage
Store the bars in an airtight container at room temperature for up to 5 days.
Thanks to the brown sugar and that extra yolk, they stay soft and chewy for days. Tuck a slice of sandwich bread into the container to keep them extra soft.
For longer storage, freeze the bars for up to 3 months. Layer them between parchment so they do not stick.
To bring back that fresh-baked, melty feel, warm a bar in the microwave for just a few seconds before eating.
You can also freeze the raw dough and bake it off whenever a craving hits.
Chocolate Chip Cookie Bars FAQ
Can I make these in a 9×9 pan?
Yes, for thicker bars. They will need a longer bake time, so add several minutes and check the center for doneness.
Why is there cornstarch in the recipe?
Cornstarch keeps the bars soft and chewy. It is a small addition that makes a big difference in texture.
Do I need a mixer?
No. That is the beauty of these bars. Melted butter means you can mix everything by hand with a whisk and a spatula.
Why did my bars turn out cakey?
That usually means too much flour or overbaking. Spoon and level your flour, and pull the bars while the center still looks slightly underdone.
Can I chill the dough?
You can, though it is not required. A short chill can deepen the flavor, but these are designed to be a quick, no-chill treat.
Can I freeze them?
Yes. Freeze baked bars for up to 3 months, or freeze the raw dough and bake it later.
How do I know when they are done?
The edges should be golden and the center set but still soft. They will look slightly underdone, which is exactly right since they finish setting as they cool.
Can I add nuts or candy?
Absolutely. Fold in up to a cup of chopped nuts, M&Ms, or toffee bits along with the chocolate chips.
Can I turn this dough into regular cookies?
This dough is built for the pan, so it would spread too much as scooped cookies. For drop cookies, use a recipe written for them instead.
How do I get clean, even squares?
Cool the bars completely, lift them out using the parchment overhang, then cut on a board with a sharp knife, wiping the blade between cuts. Cold bars slice far cleaner than warm ones.
Wrapping Up
Here is what I love about these bars.
They take a handful of pantry staples and one bowl and turn them into the chewy, chocolatey treat everyone reaches for first.
That first warm, gooey, chocolate-packed bite is the kind of thing that makes the whole kitchen smell like a hug.
So melt that butter. Press that dough. Make the pan and sneak a warm square before they are gone. 🍫
Then come back and leave me a comment. Tell me what mix-ins you added and how they turned out.
I read every one, and I love hearing about your kitchen wins.
