This post contains affiliate links.
Our favorite Oatmeal Chocolate Chip Bars are thick, chewy, and so easy to make! They're perfect for a crowd and are easy to transport in a 9×13 pan.
Oatmeal Cookie Bars Mean Business!
I don't know anyone who has tried these Oatmeal Chocolate Chip Cookie Bars and not immediately fell in love. They're so easy to make and I love the chewy texture from the oats. We don't skimp on the chocolate either.
Make sure to try my other cookie bar recipes, like Sugar Cookie Bars, Peanut Butter Bars, Snickerdoodle Bars, Butterscotch Blondies, and S'mores Bars.
How to make Oatmeal Chocolate Chip Cookie Bars:
Make Cookie Dough: With a hand mixer or stand mixer, beat together the butter, brown sugar, and white sugar until smooth and light. Mix in eggs, one at a time, then add vanilla. In a separate bowl, combine the salt, baking soda, baking powder, flour, rolled oats, and 1 cup chocolate chips. Pour the dry ingredients into the wet ingredients and stir until combined. Add remaining chocolate chips.
Bake: Press cookie dough into greased pan with parchment paper then bake at 350°F (180°C) for 25-30 minutes, or until golden brown. Let it cool completely before cutting and serving with a cut and serve turner.
Oatmeal Chocolate Chip Cookie Bars
Equipment
- Stand Mixer , optional
Ingredients
- 1 cup butter, (227g), room temperature
- 1 cup light brown sugar, (220g), packed
- 1/2 cup granulated sugar, (100g)
- 2 large eggs
- 2 teaspoons vanilla extract
- 1/2 teaspoon salt
- 1 teaspoon baking soda
- 1 teaspoon baking powder
- 1 1/2 cups all-purpose flour, (188g)
- 2 cups old-fashioned rolled oats, (170g)
- 2 cups chocolate chips, (340g) semi-sweet, milk chocolate, or a little of both!
Instructions
- Preheat oven to 350°F (180°C). Lightly grease a 9 x 13 inch pan with cooking spray or line with parchment paper.
- Beat Butter and Sugar: In a large mixing bowl beat together the butter, brown sugar, and granulated sugar until smooth and light.1 cup butter, 1 cup light brown sugar, ½ cup granulated sugar
- Add the eggs one at a time, mixing after each addition. Add the vanilla.2 large eggs, 2 teaspoons vanilla extract
- Mix Dry Ingredients: In a separate bowl combine the dry ingredients: salt, baking soda, baking powder, flour and rolled oats.½ teaspoon salt, 1 teaspoon baking soda, 1 teaspoon baking powder, 1 ½ cups all-purpose flour, 2 cups old-fashioned rolled oats
- Combine: Add dry ingredients to the creamed mixture and stir until combined. Stir in chocolate chips.2 cups chocolate chips
- Bake: Press into prepared pan and bake for 25 to 30 minutes or until golden brown. Allow to cool completely before cutting.
Notes
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
Text me new recipe ideas!
Simple, tasty ideas sent once a week. No spam.
Follow Me
I originally shared this recipe February 2016. Updated April 2018, May 2022 and September 2025.
Recipe adapted from All Recipes.
These are some of my favorite bars of all time. And so easy to make. I bake mine for 27 minutes. Definitely be sure to let them cool if you plan on taking them anywhere or else they won’t be set, but when it’s just me I love digging in right away.
I bet you do
One of my go to recipes for gatherings. The pan almost always comes home empty. Thank you for sharing!!
I just baked these delicious cookie bars. My guests went over the moon for these cookie bars.
It was my first time baking this recipe.
I did 2 slight modifications:
I cut out 1/2 cup of sugar, and I used dark chocolate chips instead of milk chocolate chips.
Absolutely outstanding dessert!
My guests loved it so much that they took the leftovers home!
Thanks for posting this recipe. 😃
So easy and SOOOO good! We love to add some butterscotch chips as well.
Delicious! I made mine with 1 cup of peanut butter chips and 1 cup of milk chocolate chips mixed together.
Otherwise followed the layering directions. My oven required me to bake it 40 minutes. Will absolutely make these again!
This was a disaster to make and I’m a good baker. This recipe doesn’t work for a 9×13 pan. I ended up having to make 1/2 batch of the dough to cover the top.
Was scrolling through the comments to find this. I wound up making 2/3 of a pan with the recipe as written. Should either multiply everything by 1.5 or use an 8 or 9 inch square pan
I browned the butter and let it cool before mixing everything together – including adding all the chips at once and pressing the whole dough into the pan. I baked it for about 30 minutes and everyone love them!
Omitted the chocolate chips and instead spread a 1:1 ratio of strawberry preserves and peanut butter to the middle layer for a different and very delicious twist!
So yummy! I added pecans to mine and they were perfect!
VERY good! Rave reviews from my family. Didn’t make it through the weekend. 🙂
It’s a keeper.
I just mixed the chips into the batter and pressed the whole works into the 9×13 pan. It’s STICKY. Grease your hands/utensils for spreading.
Addictively delicious!
Absolutely amazing!