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    You are here: Home / Desserts / Bars & Brownies / Oatmeal Cookie Bars

    Oatmeal Cookie Bars

    November 5, 2018 Updated December 26, 2018 BySam 152 Comments

    This post may contain affiliate links. As an Amazon Associate I earn from qualifying purchases. Please read my disclosure policy.
    Jump to Recipe Jump to Video Print Recipe
    Oatmeal Cookie Bars

    These oatmeal cookie bars are a heartier, chewier version of my chocolate chip cookie bars! Buttery, thick, chewy, and chock full of oats and (optional) chocolate pieces, these are easy to make with no mixer required! 

    Be sure to check out my step-by-step video just below the recipe!

    Oatmeal Cookie Bar Square

    Cookie bars are the ultimate sweet treat for when you really want cookies but are just too lazy to spend an hour scooping cookie dough.

    Alright, so they’re really good anytime, but I’ve been there before too many times to count. Some of my favorite recipes were born of sheer laziness and cookie dough scooping fatigue (I’m looking at you, sugar cookie bars).

    And while the lazy factor is a big plus for me, the best part is that we sacrifice nothing in terms of taste. These oatmeal cookie bars are like one of my big soft oatmeal cookies, only even thicker and chewier and loaded with a variety of (optional) chocolate chips. Oh and let’s not forget the best part: no chilling and no scooping required!

    Oatmeal cookie dough, how to make oatmeal cookie bars

    While you can make these cookie bars “plain” with no add-ins, I love adding chocolate chips or even chopped nuts to mine. For today’s oatmeal cookie bars I used a blend of milk and semisweet chocolate and butterscotch chips.

    Occasionally I’ll toss in chopped walnuts as well. My last batch was a mix of walnuts, dark chocolate and caramel chips (here’s where I’d insert the drooling emoji if I could find it on my keyboard).

    You can add your favorite add-ins, but I recommend only using about a cup and a half.

    warm oatmeal cookie bar with melty chocolate

    If you’re feeling a little lazy yourself this morning (or evening, or whenever you’re reading this) but also hear your sweet tooth calling, this is the dessert for you.

    Let me know what you think of it! My sister-in-law loved these and if you like them half as much as she did they’ll be well worth your time.

    Enjoy!

    Looking for more lazy-day bar cookie recipes?

    • Rice Krispie Treats
    • Peanut Butter Bars
    • Homemade Brownies

    Oatmeal cookie bars

    Oatmeal Cookie Bars

    How to make hearty Oatmeal Cookie Bars!
    Recipe includes video at the bottom of the post!
    4.91 from 42 votes
    Print Pin Rate
    Course: Dessert
    Cuisine: American
    Prep Time: 15 minutes
    Cook Time: 40 minutes
    Total Time: 55 minutes
    Servings: 16 bars
    Calories: 366kcal
    Author: Sam Merritt

    Ingredients

    • 1 cup butter melted (226g)
    • 1 cup light brown sugar tightly packed (200g)
    • ½ cup sugar (100g)
    • 2 large eggs + 1 large egg yolk
    • 1 ½ teaspoons vanilla extract
    • 1 ¼ cup all-purpose flour (157g)
    • 2 teaspoons cornstarch cornflour in UK
    • ½ teaspoon baking powder
    • ¾ teaspoon salt
    • ¼-½ teaspoon ground cinnamon optional
    • 3 cups old fashioned rolled oats (285g)
    • 1 ½ cups chocolate chips optional, I did a mix of semisweet chocolate chips, milk chocolate chips, and butterscotch chips (255g)
    Prevent your screen from going dark

    Instructions

    • Preheat oven to 350F (175C) and line a 9x9 metal baking pan with parchment paper or grease and flour the sides and bottom of the pan.*
    • Combine butter and sugars in a large bowl and stir until well-combined.
    • Add eggs and vanilla extract and stir well.
    • In a separate bowl, whisk together flour, cornstarch, baking powder, salt, and cinnamon (if using).
    • Gradually add dry ingredients to wet until completely combined.
    • Add oats and chocolate chips and stir until well combined.
    • Spread cookie dough evenly into prepared baking pan and bake on 350F (175C) for 35-40 minutes or until a toothpick inserted in the center comes out clean or with a few moist crumbs.

    Notes

    *A glass baking pan will work for this recipe instead but it will likely take longer to bake.

    Nutrition

    Serving: 1bar | Calories: 366kcal | Carbohydrates: 49g | Protein: 5g | Fat: 17g | Saturated Fat: 10g | Trans Fat: 1g | Cholesterol: 53mg | Sodium: 235mg | Potassium: 108mg | Fiber: 2g | Sugar: 30g | Vitamin A: 422IU | Vitamin C: 1mg | Calcium: 53mg | Iron: 2mg

    Nutritional information is based on third-party calculations and should be considered an estimate only. Actual nutritional content will vary based upon brands used, measuring methods, cooking method, portion sizes, and more.

    Tried this recipe? Show me on Instagram!Mention @SugarSpun_Sam or tag #sugarspunrun!

    Oatmeal cookie bar square

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    Reader Interactions

    Comments

    1. John

      February 01, 2023 at 9:15 pm

      5 stars
      Made it once, left it in a bit too long, and it was (predictably) a little dry, but still good. Tried it again, right at 35 minutes, and did 1 cup each of white chocolate chips and craisins. 👍👍👍

      Reply
      • Emily @ Sugar Spun Run

        February 02, 2023 at 9:34 am

        We are so glad you tried them again, John! Thanks for commenting ❤️

        Reply
    2. Rose

      January 16, 2023 at 8:45 am

      5 stars
      excellent recipe!
      I made the mix between chocolate and butterscotch and it was delicious. Texture was exactly what I was looking for in a bar. First recipe from your site and I subscribed because I was impressed.

      Reply
      • Emily @ Sugar Spun Run

        January 16, 2023 at 9:04 am

        Yum, that sounds delicious! We’re so happy you loved the recipe and decided to subscribe, Rose! 🥰

        Reply
    3. Wendy

      January 21, 2022 at 7:39 am

      Can you use quick oats?

      Reply
      • Emily @ Sugar Spun Run

        January 21, 2022 at 9:41 am

        You could, but the texture won’t be the same. Hope that helps!

        Reply
    4. Nancy Bailey

      January 17, 2022 at 5:32 pm

      Look so yummy! Can you also add chopped pecans in addition to chocolate chips?
      Nancy

      Reply
      • Emily @ Sugar Spun Run

        January 17, 2022 at 5:52 pm

        Yes you can! Enjoy 😊

        Reply
      • TJ McCoy

        June 29, 2022 at 4:14 am

        How do I increase the recipe yo bake in a 9×13 baking pan (aluminum)?

        Reply
        • Sam

          June 29, 2022 at 9:07 am

          A 50% increase should suffice here. I’m not sure on a bake time. 🙂

    5. Jamie

      January 16, 2022 at 2:57 pm

      Can these be baked in an 8×8?

      Reply
      • Emily @ Sugar Spun Run

        January 19, 2022 at 6:54 pm

        Hi Jamie! That should work fine, but your bake time will be different. 😊

        Reply
    6. Paige Larson

      November 26, 2021 at 3:19 am

      5 stars
      Another great recipe! I love their chewiness when I’m craving an oatmeal chocolate chip cookie but these are so much easier since I don’t have to keep on scooping dough. I enjoyed the cinnamon aspect but husband did not…so more for me!

      Reply
      • Sam

        November 26, 2021 at 12:56 pm

        More for you is never a bad thing. 😉

        Reply
    7. Lisa

      October 02, 2021 at 10:26 am

      I would like bake in a cupcake pan so they are individually pre-wrapped. How long do you recommend they be baked?

      Reply
      • Emily @ Sugar Spun Run

        October 04, 2021 at 11:20 am

        Hi Lisa! We’ve never done this before, so we can’t say for sure how these would turn out or how long they’d bake. Please let us know if you do try it! 😊

        Reply
    8. Deborah

      July 11, 2021 at 6:51 pm

      5 stars
      I add craisins and walnuts instead of chocolate chips. They are the best breakfast bar!!!!

      Reply
      • Sam

        July 11, 2021 at 9:25 pm

        I’m so glad you enjoyed them so much! 🙂

        Reply
    9. Helen

      June 01, 2021 at 2:06 pm

      Where do you get caramel chips?

      Reply
      • Sam

        June 01, 2021 at 4:57 pm

        Hi Helen! I once could typically find them alongside the chocolate chips in the baking aisle of my grocery store, but these days I’m finding that fewer stores are carrying them, and I haven’t been able to find any in a while 🙁

        Reply
        • Patty

          November 22, 2021 at 10:29 pm

          For cinnamon chips, try Walmart. They don’t always have them, but that’s the only place I’ve been able to track them down

        • Shauna

          November 22, 2022 at 10:04 pm

          Trader Joes had caramel chips. 😀

    10. Joan

      April 17, 2021 at 12:30 am

      I made these cookie bars for dinner tonight & we all agreed they are amazing…so chewy & buttery. They were still slightly warm so the chips were still a little gooey! YUM! Thanks for sharing this great recipe!

      Reply
    11. Thet Munoz

      April 10, 2021 at 3:14 am

      5 stars
      Thanks again Sam! 😊💕Have baked this a lot of times because my family loves it so much.

      Reply
      • Sam

        April 12, 2021 at 10:04 pm

        I’m so glad everyone enjoyed them so much! 🙂

        Reply
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    The author (Sam) in blue shirt holding donut Hi, I'm Sam! I'm dedicated to bringing you sweet, simple, and from-scratch dessert recipes. My life may or may not be controlled by my sweet tooth. Send help (or chocolate). Read more about me.

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