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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.

Oatmeal Cookie Bars Mean Business!



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!!
These are the perfect chewy chocolate chip oatmeal combination. I just mixed all of the chips in at once, and it took about 40 minutes for mine to be done. They are DELICIOUS. And likely won’t make it through tomorrow.
Should’ve read more closely, or measured my Pampered Chef stoneware bar pan better. Looks & smells delicious, but for the medium PC bar pan (10×15), use 1.25 of the recipe.
I didn’t think that there was a cookie that could knock my Monster cookie recipe off the thrown. I believe this one did it! Wow these are incredible and I have really high expectation of a cookie. Well done!!
Yummy, gooey goodness! I followed the recipe, as written. I’ll be repeating this one, for sure!
So, I heard that white sugar is brown sugar without the molasses…so, I put a touch of molasses in my white sugar thinking “now I don’t need brown sugar!” I should have used 1:10 of what I put in lol my boyfriend said “tastes like a cookie!!”? Maybe I’m the only one who noticed lol
Made these today. Used only 1/2 cup of brown sugar and 1/4 cup of white and baked them for only 15 mins. thank you
I made these for my family this week and they are delicious. Really moist and delicious! I halved the recipe and used an 8×8 pan. Came out great! Thanks for the recipe!
Thank you for the comment on the 8X8 pan, I used it and was hoping it turned out OK. LOVE these, good ingredients and I did put Walnuts on half of them too. Delicious! No too much butter but tasted great. Will be trying more of her recipes. Thanks!
Did you bake them for the same amount of time in the 8×8 pan?
I can’t recall if I’ve left a comment here before, so I’m leaving one now! I used to send these to work with my husband (before the remote-work era), and his coworkers went insane for them. His boss, who is a man of very few words, even remarked after one bite, “You could SELL these!” These are my go-to whenever I need a treat that will wow. That second layer is a hassle to spread, but I don’t even mind. So worth it! I’ve got a batch in the oven right now for a neighbor, in fact.
I added a 1/2 cup of flaked coconut and sprinkled some chopped walnuts on top. The whole family loved them! They were chewy and crunchy at the same time! This recipe is a definite keeper. Thank you.
Yes , this will satisfy your desire for a chewy texture. My oven always takes longer to cook so I adjusted the time, I did not put chocolate chips at all until after I spread the dough, and only to half. Sprinkled on top and pressed in a little. I couldn’t resist eating it right when it came out. Very good , and got better after it cooled.