Peanut Butter Chocolate Chip Cookie Bars
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Soft and chewy peanut butter chocolate chip cookie bars!
These cookie bars are made extra thick in a 9×9 pan and are loaded with creamy peanut butter and packed full of chocolate chips!
Is there even a better flavor combination than chocolate and peanut butter? I’m not sure that there is, and any recipe that combines these two flavors is a winner in my book.
So, it probably won’t surprise you that these peanut butter chocolate chip cookie bars are among my latest baking obsessions. Recently I’ve been going through peanut butter like mad (fortunately I’d stocked up on jars over the holidays when I made dozens and dozens of peanut butter blossoms and a pan of peanut butter lasagna!), and the craze has continued as I’ve been making a batch of peanut butter chocolate chip cookie bars once a week.
They’re soft and chewy, made with a dash of cornstarch and creamy peanut butter (I don’t recommend using natural peanut butter). These cookie bars can be made with milk, semisweet, or dark chocolate chips (or even white chocolate chips, it just depends on your chocolate preferences, I always prefer semisweet chocolate).
While I love a great chocolate chip cookie, these peanut butter chocolate chip cookie bars might be even better, and not just because they add peanut butter into the mix.
How to Make Peanut Butter Chocolate Chip Cookie Bars
Making the dough is as simple as making classic cookie dough, but the actual production requires half the effort because there’s no need to scoop the cookie dough into even-sized balls, wait to cook pan after pan of cookie dough, and repeat over and over until all of the cookie dough is gone.
Also, unlike with so many of my favorite cookie recipes, there’s absolutely no chilling required to make these cookie bars. Just spread the batter into the pan and you’re good to go!
This recipe can be made in a 13×9 pan if you prefer, but I like to bake it in my smaller 9×9 pan instead for extra thick and chewy peanut butter chocolate chip cookie bars (like I said… big peanut butter & chocolate fan over here, so the bigger and fatter the squares the better!).
Keep in mind that if you do opt for the larger pan you will need to shave five minutes or so off of the cook time, as the thinner bars will bake much faster than their deep dish counterparts.
- 1 cup unsalted butter softened to room temperature
- 1 cup creamy peanut butter
- 1 1/2 cups light brown sugar tightly packed
- 1/2 cup sugar
- 1 large egg + 1 large egg yolk
- 2 teaspoons vanilla extract
- 2¾ cups all-purpose flour
- 1 teaspoon cornstarch
- 1/2 teaspoon baking powder
- ¼ teaspoon salt
- 2 Tablespoons milk
- 2 cups chocolate chips semisweet or milk chocolate would work great
Preheat oven to 350F and line a 9×9 pan with parchment paper (or lightly grease and flour the pan).
Using an electric mixer, cream together butter, peanut butter, and sugars until well combined.
Add egg, egg yolk, and vanilla extract and stir well.
In a separate bowl, whisk together flour, cornstarch, baking powder, and salt until well combined.
Gradually add flour mixture to butter mixture until completely combined.
Add milk and stir again until mixture is well incorporated.
Fold in chocolate chips.
Transfer batter to prepared 9×9 pan and use a spatula to spread it evenly into pan.
Bake on 350F for 35 minutes or until edges are just beginning to turn golden brown and a toothpick inserted in the center comes out clean or with few moist crumbs.
Allow to cool before cutting and serving.
(Nutrition information provided is an estimate and will vary based on cooking methods and brands of ingredients used.)