Chocolate Chip Cookie Brownie Bars are almost too delicious to write about without running to the kitchen to make a batch.
I’m convinced that chocolate chips make the world a nicer place to be. From chocolate chip banana muffins to chocolate peanut butter pie cups to hot chocolate cinnamon rolls, they make good things even better. By all means, make these as soon as you have the chance!

Chocolate Chip Cookie Brownie Bars
Not surprisingly, this recipe calls for a lot of chocolate chips and plenty of sugar. We’re not looking to make healthy chocolate chip cookie bars. We’re looking to bake some rich, sweet, decadent treats that make people beg for just one more.
So, here we have a scrumptious layered dessert bar that features a homemade chocolate chip cookie on the bottom, topped with a brownie layer. Finish off the dessert with a mouth-watering cookie dough frosting on top.
HEAT-TREAT THE FLOUR FOR COOKIE DOUGH LAYER:
- Preheat oven to 350F degrees. Line a cookie sheet with parchment paper and spread flour in an even layer.
- Bake for 5-7 minutes, use a thermometer to check that the flour reached 160F (72C) immediately after removing from oven.
- Once flour has reached 160F (72C) allow it to cool and run it through a sifter to break up any clumps that may have formed while baking.
Where did chocolate chips come from?
As I’m writing this, for some reason two questions popped into my mind. I needed to know who invented chocolate chips and whether their halo was made out of chocolate chip cookies?
Her name was Ruth Graves Wakefield of the Toll House Inn in Whitman, Massachusetts. As the story goes, she was known for chopping up Nestle candy bars and putting the bits into a cookie everyone adored.
Toll House Chocolate Chip Cookies were named after her little inn. Due to her cookies’ popularity, Nestle knew Ruth was onto something.
Ultimately, I think Nestle may have given Ruth the shaft.
For this reason, Nestle reached an agreement in 1939 to add her recipe to their candy bar wrapper. In return, she was given a lifetime supply of chocolate. Look, I love chocolate a lot. If it were possible to snarf it up it without any sugar-related health, dental or weight problems, I’d eat it every day, all day. Bring on the chocolate chips!
If I invent something that will make a company millions upon millions of dollars, I want a lifetime supply of money – not chocolate. Poor Ruth. She had no idea what she’d invented or how it would change the world of home bakers everywhere. Hopefully, she spent her life happily surrounded by cookie lovers and chocolate.
Then again, maybe I will take that lifetime supply of chocolate!
PRO-TIP: I highly recommend heat treating your flour before mixing it into the recipe. You can do this by microwaving the flour for 1 minute and 15 seconds (stopping and mixing it after 15-second intervals). This is good for heating the flour to prevent any bacteria.

Chocolate Chip Cookie Brownie Bars
Ingredients
Ingredients
Chocolate Chip Cookie Base :
- 3/4 C unsalted sweet cream butter softened
- 1 C light brown sugar
- 1/2 C sugar
- 2 large eggs
- 2 tsp pure vanilla extract
- 1 tsp baking soda
- 1/2 tsp kosher salt
- 2 1/4 C flour
- 2 C semi-sweet chocolate chips
Chocolate Brownie Layer:
- 3/4 C unsalted sweet cream butter
- 1 C semi-sweet chocolate chips
- 3 large eggs
- 1 1/2 C sugar
- 1/2 tsp kosher salt
- 1 tsp pure vanilla extract
- 1/2 C Hershey cocoa powder
- 2/3 C flour
Cookie Dough Frosting Layer:
- 1 C unsalted sweet cream butter softened
- 1 C light brown sugar
- 1/2 C sugar
- 1/4 C Whole milk
- 2 tsp Pure vanilla extract
- 1/2 tsp kosher salt
- 2 C flour
- 1 1/2 C semi-sweet chocolate chips
Instructions
Directions
- Preheat oven to 350 degrees and line parchment paper into the 9x13 baking dish
- Using a standing mixer, beat the butter, sugar and brown sugar together until light and fluffy
- Beat in eggs, one at a time until combined
- Mix in the vanilla, baking soda, salt until combined
- Gradually mix in the flour ingredients until combined
- Fold in chocolate chips
- Spread the dough into the pan
- Bake the dough into the oven for 25 minutes or until the edges are lightly golden brown and the center is almost set
- Allow to cool while you make the brownie batter
Brownie Batter directions:
- Using a medium pot on low-medium heat, melt the butter
- Whisk in the chocolate chips until they are smooth
- Remove pot from heat and set aside
- Using a medium bowl, whisk together the eggs, sugar, salt and vanilla extract
- Gradually whisk the egg mixture into the chocolate mixture.
- Gradually whisk in the cocoa powder and flour until combined and smooth
- Spread the brownie batter onto the top layer of the cookie layer
- Bake in the oven for 25-30 minutes or until a toothpick comes out clean in the middle
- Place on the counter to cool completely
Chocolate chip cookie dough frosting directions:
- Using a standing mixer, beat together the butter, sugar and brown sugar until combined and smooth
- Mix in the milk, vanilla and salt until combined
- Fold in the chocolate chips
- Spread the frosting onto the top of the brownie layer
- Place into the fridge overnight to allow the frosting to harden
- Cut into bars and enjoy!
Last Step:
Please leave a rating and comment letting us know how you liked this recipe! This helps our business to thrive and continue providing free, high-quality recipes for you.Notes
- Preheat oven to 350F degrees. Line a cookie sheet with parchment paper and spread flour in an even layer.
- Bake for 5-7 minutes, use a thermometer to check that the flour reached 160F (72C) immediately after removing from oven.
- Once flour has reached 160F (72C) allow it to cool and run it through a sifter to break up any clumps that may have formed while baking.
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