Thick and chewy Oatmeal Cookie Bars are a great treat for a crowd, potlucks and parties. They have the flavor you love from a great oatmeal chocolate chip cookie, baked into easy and delicious bars!
Love brownies and cookie bar recipes? Try my Blondies, Snickerdoodle Bars, or Mississippi Mud Brownies!
Weekends are my weakness when it comes to sweets. I usually go for cookies or bars of some sort because I can always count on having the ingredients on hand.
These Oatmeal Chocolate Chip Cookie Bars are a regular, sweet-tooth-satisfying weekend treat at our house!. Chewy, chocolate and oat goodness in every single bite!
How to make Oatmeal Chocolate Chip Cookie Bars:
Beat butter and sugars: In a large mixing bowl beat together the butter, brown sugar, and white sugar until smooth and light.
Add eggs: one at a time, mixing after each addition. Add the vanilla.
Mix dry ingredients: In a separate bowl combine the dry ingredients: salt, baking soda, baking powder, flour, rolled oats, and 1 cup chocolate chips.
Combine: Add dry ingredients to the butter mixture and stir until combined. Add chocolate chips.
Press into greased pan.
Bake for 25 to 30 minutes or until golden brown. Allow to cool completely before cutting.
Storing and Freezing Instructions:
Storing instructions: Store covered at room temperature for 5 days or store in the fridge for 7-10 days.
Freezing Instructions: For best results, allow pan to cool completely. If you used parchment under the bars, lift the cooled bars out of the pan. Wrap the whole bar brick in plastic wrap and then aluminum foil. Freeze for up to one month. Thaw completely in the fridge before cutting into bars.
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Recipe
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
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I originally shared this recipe February 2016. Updated April 2018 and May 2022. Recipe adapted from All Recipes.
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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 have made this recipe several times, it has become our favorite go-to recipe for family dessert, functions at church, work and school. This recipe always gets rave reviews on them and there are never any leftovers! The only change I made compared to your recipe is that I don’t divide the chips, I just mix it altogether and then put in the pan. Thank you for this fantastic recipe. I send everyone to your site that asks for the recipe. 🙂
These are great, I have made them several times using masa harina flour as a substitute to make them gluten free! I also used instant oats each time since that is the type available as gluten free at my local store. Thank you 🙂
What about using coconut flour or a mixture of coconut and almond flours ? What can I substitute for brown sugar because I already would be substited Raw Stevia for the regular sugar ? I think I’d also add some almond butter and unsweetened coconut flakes.
What are your thoughts on this ?
Delicious recipe! I added a ripe banana to the moist ingredients (because it was handy and getting over ripe). I also added all the chocolate chips at once with 1/2 cup of chopped walnuts, and spread the mixture in the pan at once. I will definitely make again! *I only altered the recipe because I enjoy putting my own twist on favorite recipes : )
I’m disappointed. The dough was extremely dense, and the bars are dry. I may have baked them too long, as they did not seem done after 30 minutes. I used Nestle dark chocolate chips, white chocolate chips and walnuts. I used dark brown sugar, as I had no light brown, and white wheat flour which has been a great substitute in oatmeal cookies. Maybe that caused the dryness? Wish I’d put in more chips or some dried fruit, as they seem more like an oatmeal bar than chocolate chip, and I feel like they could use some more flavor. I made them to take to chemo as a thank you to the nurses,wish I was happier with the outcome.
Hi Dimi, I’m sorry, I haven’t made any of those adaptations to this recipe, so that could be why–especially the wheat flour. It could also be from over-mixing and over-baking. The recipe as written yields a moist but chewy bar. Hope you get to try it again soon.
I made these yesterday for my bible study group. They were easy to make and really good. A keeper to make again.
I’m so happy you enjoyed them! Hope you get to try more recipes soon. Thanks for taking the time to comment <3
My family loved these cookie bars! Thanks for sharing your amazing recipes!
Very yummy bars! Came together in no time. The only change I made was to toss in a few toffee bits in the middle with the chocolate chips. Will definitely be making these again 🙂
Love the idea of adding toffee bits–YUM! So happy you liked them. Thanks Jane.
These are dangerously good, and so easy. Thanks (from me and my family!) for the great recipe!
Great recipe, thanks for sharing. Lazy baker instructions – melt the butter, use a big spoon instead of mixer, use all brown sugar, mix the chips in at the end, press flat in pan. I made a half batch in an 8 x 8 pan and 4 oz chips were plenty.
Can you use self-rising for in these cookies??
Hi Shelia, I am not sure it will turn out the same. Self-rising flour often has more baking soda than you would need!
I used self rising flour and they turned out delish!!! I always use self rising flour when making cookies. They always turn out great!!