This is the easy oat slice you will make on repeat, because it is genuinely one bowl and you can take it any direction you like. Everything goes in together, gets a good mix, pressed into a tin and baked. That is it.
The base is a chewy, lightly sweet oat slice, and the cup of mix-ins is where you make it yours, choc chips, nuts, dried fruit, whatever you fancy. It is perfect for lunchboxes and afternoon snacks.
Ready in about half an hour and endlessly adaptable, it is a proper keeper.
Why You’ll Love It
It is one bowl and about as easy as baking gets, mix, press, bake. It is ready in around 30 minutes, it makes a generous batch of 16 snack slices, and the mix-ins mean it is never quite the same twice. It is a great lunchbox filler and a handy way to use up bits of chocolate, nuts or dried fruit in the pantry.
Handy Tips
Press the mix down firmly and evenly in the tin so the slice holds together when you cut it, a flat bottomed cup or glass helps. Do not overbake it, pull it out at golden and it will firm up as it cools while staying chewy. Let it cool fully in the tin before slicing for the cleanest bars, and choose mix-ins that suit lunchboxes if that is where it is headed.
What To Serve With It
It is a grab and go snack on its own, great in lunchboxes or with a cup of tea. Warm with a scoop of ice cream, it doubles as an easy dessert.
Leftovers / How to Store It
Keep the slice in an airtight container at room temperature for up to 5 days, or freeze it for longer. It travels well, which makes it ideal for lunchboxes and picnics.
Don’t Forget to Share
Tried my Oat Slice recipe? I’d love to see how you used it. Snap a pic and tag me on Instagram @steph_cooks_stuff, I love seeing your creations.
Oat slice
Prep Time 5 minutes 
Setting Time
25 minutes 
Ingredients
Equipment
Method
- Pop everything into a bowl and give it a good mix.
- Press into a lined square tin
- Bake at 180°C for 25 minutes.
- Let it cool, then cut into snack-sized slices. Enjoy!
Nutrition
Video
Tried this recipe?
Let us know how it was!
FAQs
Can I change the mix-ins?
Absolutely, that is the fun of it. Choc chips, chopped nuts, dried fruit, seeds or a mix all work. Keep it to about a cup so the slice still holds together.
How do I stop it falling apart when I cut it?
Press the mix in firmly before baking and let the slice cool completely in the tin before slicing. Cutting it warm is usually why it crumbles.
Can I make it gluten-free?
You can adapt it. Use a gluten-free plain flour and make sure your oats are certified gluten-free, as regular oats can pick up gluten during processing. This changes the recipe from the original, so the texture may vary a little.
Can I freeze it?
Yes. It freezes well. Cool completely, then freeze in a container and thaw as you need it, which makes it handy for lunchboxes.
Oh my goodness the oat slice is just the best thing so delicious I had to put it away so I wouldn’t eat it all at once
Thank you so much
I have to make this every week because everybody loves it.
I absolutely love it!
Love these!! They never last because everyone grabs one as the walk past
Hi Marizca, that’s fantastic. So glad everyone loves them. Thank you for the stars 🙂
Do you think I can just make them as cookies instead of a slice?
Hi Karen, yes, go for it. This dough is sturdy, so it’ll only spread a little as it bakes. I’d roll it into balls and press them down gently before baking (not flat) for a nice even cookie shape. They’ll bake quicker than the slice, so check them around 12 to 15 minutes until golden at the edges. Let me know how they turn out.
Could I add chopped walnuts as well as choc chips ? If so how much could I add and would all other ingredients stay same?
Hi Jenny, absolutely, you can halve the choc cips and add chopped walnuts so you have a cup in total. You can add chopped walnuts to the 1 cup of choc chips as well if you want, but if you find the mixture a bit dry then you will have to adjust more of the wet ingredients to bring it back together. Let me know how it goes.
Super easy and delicious. Freezes well for lunchboxes too.
I just made it for my hubby added dates and cranberries, turned out yummy, thankyou, love your recipes.
I bet it was yummy. Thanks for sharing Cheryl 🙂
Made these today and they are yummy. I had no brown sugar so used raw sugar instead. My 1 cup of extras was a combo of both choc buds and sultanas. Great snack to have on hand when the grandkids are over.
I have made this numerous times and it always turns out great. Bake with added walnuts, dried chopped cranberries and seeds. I also substitute sugar with stevia.
This freezes well and is a great grab and go snack
Loved that you made it your own 🙂