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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!!
I’ve made these as directed, and they were delicious! Then, I used 50% butterscotch chips, maple flavor in addition to vanilla, added cinnamon and nutmeg and a handful of pecans, and they were even better! Absolutely wonderful recipe, easy to alter, I’ll be making these for years!
This is an awesome recipe. I make sure to use really good butter like Kerrygold. I add a tablespoon of apple cider vinegar to add flavor (not that they need any) The bars Stat so soft and chewy!!!
Hi Lauren, I’m Philip and my wife is Elena. I translated the recipe for oatmeal chocolate chip cookie bars last night (she only speaks Spanish) and she’s planning to make a batch today. Can’t wait!
Can this be baked in a 7×11 pan?
Adjustments for 7×11 pan?
These were better than my go to oatmeal cookie recipe. Next time I’m adding butterscotch chips as well. Sooooo good!! Thank you!!
I followed the recipe exactly (except for mixing in the chips). The recipe was easy to follow, fit well into a 9×13 pan, and baked well. Unfortunately, I really didn’t like the cookies. They were too buttery, much too sweet, and didn’t have enough oatmeal. I won’t be making these again.
I really didn’t like these cookies. They were way too sweet. The chocolate chips should have been cut at least in half, if not more.
Very good but vey rich. Perfect for a weekend on the lake.
This recipe looks good! Can I substitute raisins for chocolate chips? If so what quantity. I love oatmeal raisin and wanted a bar type cookie instead of muffin or raisin cookie. Your recipe looked perfect for adapting. But I’m not a baker but a guesser. 🤣 thank you.
I think it would be delicious!! Equal amount!
These are delicious and so easy to make! This has become my go to recipe!
I loved these bars. They are super delicious, but very rich. I added heath bits. I do think I will cut down the amount of chocolate chips the next time I make it to 1 1/2 cups.