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!

Oatmeal Chocolate Chip Cookie Bars on a plate.

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!

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.

Three process photos for making oatmeal cookie bar dough.

Press into greased pan.

A 9x13 inch pan with oatmeal cookie bar dough in it, ready to bake.

Bake for 25 to 30 minutes or until golden brown. Allow to cool completely before cutting.

Baked Oatmeal Chocolate Chip Cookie Bars cut into squares.

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 on a plate.
Prep 15 minutes
Cook 30 minutes
Total 45 minutes
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Ingredients
  

Instructions
 

  • Preheat oven to 350 degrees F. Lightly grease a 9 x 13 inch pan with cooking spray or line with parchment paper.
  • In a large mixing bowl beat together the butter, brown sugar, and white sugar until smooth and light.
  • Add the eggs one at a time, mixing after each addition. Add the vanilla.
  • In a separate bowl combine the dry ingredients: salt, baking soda, baking powder, flour and rolled oats.
  • Add dry ingredients to the creamed mixture and stir until combined. Stir in chocolate chips.
  • Press into prepared ban and bake for 25 to 30 minutes or until golden brown. Allow to cool completely before cutting.

Notes

To freeze: Allow the cookie bars to cool completely and cut into squares. Place squares in a freezer-safe container or ziplock bag. Freeze for up to 3 months.

Nutrition

Calories: 254kcalCarbohydrates: 34gProtein: 2gFat: 12gSaturated Fat: 7gCholesterol: 36mgSodium: 180mgPotassium: 69mgFiber: 1gSugar: 22gVitamin A: 290IUVitamin C: 0.1mgCalcium: 41mgIron: 1mg

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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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Lauren Allen

Welcome! I’m Lauren, a mom of four and lover of good food. Here you’ll find easy recipes and weeknight meal ideas made with real ingredients, with step-by-step photos and videos.

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Comments

  1. 4 stars
    Chewy & delicious! I baked for 20 min at 350° then lowered the temp to 330° because I saw the edges getting brown while the middle was still quite raw. I then baked for another 20-30 min and they came out perfect! Next time I will try with 1C milk chocolate chips & 1C caramel chips!

  2. Twice I tried this recipe, both times the centre did NOT bake – gooey mess!! I even baked it an extra HALF HOUR and the middle was still gooey and also sinks a lot from the edges. Total waste of time and money. Please check your recipe and instructions because there is probably some careless mistake somewhere as I bake all the time and normally get it right.

    1. Hey Marcia,
      Really sorry it didn’t turn out great for you. This recipe has been tested lots of times in Lauren’s kitchen and I make them regularly at my home too and they always turn out perfect. It sounds like it might be an oven issue. I found out my own oven was more than 30 degrees off when I checked it with a thermometer last year. Maybe give that a try? It’s a game-changer for baking!

  3. 5 stars
    Made this recipe using GF Bob’s Red Mill cup for cup, added 1/2 c rough chopped walnuts and enjoy dark chocolate chunks. Sent a plate to the neighbor and I think I’ll add dried cherries to the next batch. This will be in our permanent rotation.

  4. 3 stars
    Followed the recipe down to the last letter. Ended up almost tripling the cooking time and feel it needed half the butter amount advised. Came out still soft but greasy. Will definitely try again but adjust accordingly

  5. 1 star
    I’m sorry I have to agree with everyone, this is not a good recipe at all. Crunchy and overbaked on the top and overbaked sides, doughy in the middle.

  6. 5 stars
    Absolutely delicious!! Mine didnt look gooey like the pictures, but waited until it cooled almost all the way before cutting into bars. I would not change anything that alters the ratios…except I did add 1/2 teaspoon of ground saigon cinnamon. I thought these were perfect! The perfect oatmeal cookie bar.

  7. 2 stars
    Followed recipe and they came out brown on top and not fully cooked in the middle. They may get added to ice cream sundaes, at least the edges!

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