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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.
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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!!
HI! Mine turned out a bit cakey, could it be because I lessened the sugar by around by 2 tablespoons (30 grams)? baked it for 25 mins. Still very delicious though! Awesome recipe!
Can the sugar be substituted with Swerve? If so, would the same measurements be needed?
Thank you.
I’ve never used swerve, but I imagine it would be the same.
I haven’t made these yet but I almost always use baking Splenda to replace half of the sugar. Has turned out fine. I always let people know. So far, no one has tasted a difference.
Made this twice, second time doubled the recipe and added walnuts! Really Really GOOD!
Thanks for sharing this recipe!
how long (how many days?) will these last in a container at room temp? or do we refrigerate?
I think they’re best enjoyed within 3 days (freeze them if you’d like them to last longer!)
I only have quaker quick oats.. will that work? or will it change something?
Yes, they will work. Enjoy!
These are amazing!!! Huge hit with everyone. For the oats I used half rolled, half instant. The dough is sticky so it’s easiest to put all the chocolate chips in at once. Seriously these taste so good!! And easy too. Mine were perfect at 26 mins. Thanks for sharing.
Tasty recipe! I did this recipe but added just 1 cup of brown sugar, 1/3 cup butter, and 1/3 peanut butter instead of what you suggested and it tasted good but came out super dry. Is it because I did not add enough butter? If so what should I use as a healthier alternative? Thank you in advance!
Great recipe. I made some modifications if anyone wants to try. I reduced the chocolate content significantly overall. I placed all the batter at once. I then used 1 tablespoon peanut butter, 2 spoons almond butter, honey as per your taste and some chocolate chips and combined all of them in a pot/pan on low flame to let it melt and make a smooth chocolaty batter. I spread that on top of batter and then baked it accordingly. This helped me reduce the overall chocolate content significantly and also add some nut butters. I also added some flaxseed along with oats.
Cheers
Vik
I cut the sugars in half, substituted nut butter instead of butter, substituted 1 cup of the flour with almond flour, and added coconut flakes. Unbelievably good and my husband begs me to make them again.
Big hit with family and friends. Highly, recommend you make this recipe.