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    "Home" » Lunchbox Recipes

    Chocolate Chip Oat Slice

    June 8, 2021 by ohsobusymum 13 Comments

    Jump to Recipe

    My kids are obsessed with the chocolate chip oat bars from the supermarket, but with 4 kids, a packet of 6 doesn't last very long in our house. I thought I would play around with a recipe and bake my own. I wasn't sure if my kids would approve because they are super fussy and a little savage when it comes to my homemade baking, but I can officially report that this chocolate chip oat slice is KID APPROVED x 4!

    Kid approved means it's perfect for the lunchbox or as a snack. I'm always looking for lunchbox snacks for my children, so now I have another recipe that I can bake ahead of time, freeze and pack in their lunchboxes.

    Tips when baking the chocolate chip oat slice

    • This slice can be frozen in an airtight container for up to 3 months which makes it perfect to bake ahead of time and freeze for the lunchbox.
    • You can add anything you like to the slice. If you would prefer to keep out the chocolate, you could add some dried fruit or desiccated coconut for some extra flavour.
    • The slice will be a little soft when you first take it out of the oven, but as it cools, the slice will harden.
    • I cut mine into bar shapes, but you could cut them into squares or any size that is perfect for your kid's lunchbox.
    • I baked the slice in a lamington sized tray, but you could bake it any size tray you like. The thickness of the bars will just differ depending on your tray size.

    What ingredients do I need to make this chocolate chip oat slice?

    • Rolled oats (I used the Woolworths branded oats)
    • Butter (this recipe is best made using the real block butter and not margarine)
    • Chocolate baking chips
    • Brown sugar
    • Eggs
    • Self-raising flour
    • Baking tray (I used a lamington sized tray)
    • Baking paper to line the baking tray

    If you're looking for more lunchbox recipes, check out some of my favourites below!

    • Homemade sushi the easy way!
    • 5 sandwich sushi ideas for the lunchbox
    • Easy strawberry and yoghurt muffins
    • Easy zucchini slice

    Chocolate chip oat slice

    Oh So Busy Mum
    Slice into bars or pieces perfect for the lunchbox

    Click on the stars to rate this recipe!

    4.95 from 18 votes
    Print Recipe Pin Recipe
    Prep Time 5 minutes mins
    Cook Time 25 minutes mins
    Servings 12

    Ingredients
      

    • 1 cup 150g self-raising flour
    • 1 cup 90g rolled oats
    • ⅔ cup 140g (firmly packed) brown sugar
    • 1 cup 200g milk chocolate chips
    • 125 grams butter, melted cooled slightly
    • 1 egg

    Instructions
     

    • Preheat oven to 170°c and line a baking tray with baking paper
    • In a bowl, mix all dry ingredients together except the chocolate chips (they will melt if added with the butter).
    • Add the melted butter and egg. Mix with a wooden spoon until the mixture is combined.
    • Add the chocolate chips and mix.
    • Pour mixture into the baking tray and push down firmly with a spatula.
    • Bake for 25-35 minutes or until firm to touch and golden on top. Allow for cool (it will slightly harden when cooled).
    • Slice into desired sizes.

    Thermomix Instuctions

    • Preheat oven to 170°c and line a baking tray with baking paper
    • Add cubed butter to Thermomix bowl, 2-3 minutes, speed 2, temp 50C until the butter has melted.
    • Add flour, oats sugar and egg and mix speed 4 for 30-60 seconds or until mixture has combined.
    • Pour chocolate chips into TM bowl and mix through with a spatula.
    • Pour mixture into a baking tray and bake for 25-35 minutes or until firm to touch and golden on top. Allow for cool (it will slightly harden when cooled).

    The nutritional information provided is computer generated and is only an estimate. This data is provided as a courtesy for informational purposes only.

    Have you tried this recipe? Please rate it and leave a comment HERE!

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    Reader Interactions

    Comments

    1. Tiffiny

      June 08, 2021 at 5:49 pm

      5 stars
      Super easy to follow and delicious!
      We added some drizzled melted chocolate on top after cutting into bars and the kids LOVE it! Delicious. Will definitely be making this again with some other different flavour variations!

      Reply
    2. Nadine

      June 13, 2021 at 9:12 am

      Great recipe. My daughters love it and are looking forward to having it in their school lunch box. I substituted the butter for coconut oil and it works a treat.

      Reply
    3. Tarsha

      June 17, 2021 at 11:33 am

      I did not let mine cool enough before transferring it out of the pan. It cracked. Should have known better but I was excited to try it. Will know for next batch. This was really to see if the kids liked it, which they did. So thank you for the recipe, it's a keeper!

      Reply
    4. Selly Setiawan

      June 29, 2021 at 2:24 pm

      5 stars
      This is definitely a gem 💎
      Tried this today and I don’t think it’s going to be only for lunchbox. 😬
      I have finished 3 slices before even it is use for my son lunchbox

      Reply
    5. Katie

      July 05, 2021 at 10:39 am

      5 stars
      Sooo yummy! And easy.
      Mine were a little crumbly so just trying to figure out how to stop that from happening but otherwise a very big hit in my fam

      Reply
    6. Kaden

      August 01, 2021 at 7:35 pm

      5 stars
      Absolutely the best taste and look of all the food I have ever made

      Reply
    7. Virginia

      March 02, 2022 at 6:26 pm

      5 stars
      Kids loved it. I didn't have enough sugar but the half cup I used was plenty. I also didn't have choc chips so I just cut up a bar of chocolate. Baked it in a loaf pan so the bars had some height which worked well. Will definitely be making this again.

      Reply
    8. Tina

      March 06, 2022 at 7:40 pm

      could I sub in vegetable or macadamia oil for the butter?

      Reply
    9. Kylie

      March 27, 2022 at 8:23 pm

      Made this recipe for the first time today and usually if one child likes something it’ll mean the other child doesn’t BUT it was enjoyed by all which is awesome!! Will definitely make again. Thank you for sharing.

      Reply
    10. Georgia

      June 05, 2023 at 3:14 pm

      5 stars
      Easy and delicious. Thank you!

      Reply
    11. Alexandra Lott

      August 24, 2024 at 8:26 am

      5 stars
      Delicious, and so easy!

      Reply
    12. Lozt

      August 29, 2024 at 3:21 pm

      4 stars
      I rolled these up into balls flattened slightly with a fork as biscuits baked for approx 20mins. Turned out well, next time I'd use half the amount of brown sugar.

      Reply
    13. Cosmina Badiu

      March 27, 2025 at 4:08 pm

      5 stars
      Loved this recipe, I’ve used coconut oil to make it dairy free and it’s so yum!
      Will definitely be making them again.

      Reply
    4.95 from 18 votes (9 ratings without comment)

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