Soft and chewy Oat Slice that takes minutes to make. This one-bowl recipe is quick, easy and delicious. Perfect as a snack on-the-go or for the kid’s lunchbox. It’s also easily customisable, depending on what you have on hand.
Easy Oat Slice to the rescue! If you’re looking for a tasty snack, something for the lunchbox or a quick treat to whip out for unexpected guests, this is the one-bowl slice for you. This simple but oh-so-tasty Oat Slice comes together in minutes – no electric mixer needed.
You don’t need any fancy ingredients and it’s highly customisable depending on what you have on hand. It’s buttery and sweet (but not too sweet) and a little bit hearty too, thanks to plenty of rolled oats. It’s my new go-to snack.
why you will love this recipe
- Quick and easy: This one-bowl is super quick and easy.
- No mixer: You only need a bowl and spoon to make this – no electric mixer needed
- Customisable: You can customise the mix-in’s with whatever you have on hand.
- Soft and chewy: This buttery Oat Slice is soft, chewy, buttery (and portable!).
I made a double batch of these with chocolate chips, my husband and toddler have eaten the whole lot in 2 days. Easy and yum!
– Poppy
recipe testing
Over the Christmas break, I was happily reunited with family after a long year of lockdowns and border closures. It was a very sweet holiday season for us ❤️ One afternoon, we went over to my sister-in-law’s house for afternoon tea.
When we arrived, she whipped out a buttery Oat Slice for us to enjoy. A few bites in, I was smitten! I immediately asked her how she made it and what was in it, and when I got home, I set about recreating a copycat version of my own.
Taking a little inspo from my favourite Anzac Biscuits and Oatmeal Cookies, this baked oat slice is buttery, chewy and incredibly easy to make. It’s filled with oats and coconut, with plenty of butter and brown sugar for that rich, caramel-like flavour.
It’s quick, easy and very moreish.
Ingredients
- Plain flour: Or all purpose flour.
- Rolled oats: Don’t use quick oats, you want whole oats for texture and consistency.
- Coconut: I prefer shredded coconut but desiccated works too.
- Brown sugar: Adds delicious caramel notes.
- Baking powder: For a little lift.
- Butter: We use melted butter to combine everything together.
- Egg: Just one egg to bind.
- Vanilla extract: For extra flavour.
- Mix-in’s of your choice: More on that below.
how to make Easy Oat Slice
- Stir together flour, oats, coconut, brown sugar, baking powder and salt.
- Whisk together butter, egg and vanilla – just to break up the yolk.
- Add wet ingredients to dry ingredients and stir until combined.
- Stir through mix-in’s.
- Bake until golden.
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Quick tips for the perfect oat slice
- Weigh your ingredients using a baking scale: For the best results, use a scale to measure your dry ingredients like flour, oats, and sugar. Using cup measurements can result in adding too much flour or oats, which may result in your slice being dry and crumbly.
- Don’t overbake your slice: Keep an eye on your slice as it will go from baked to burnt fairly quickly. Once it’s evenly browned and golden on the edges, it’s ready to come out of the oven.
- Take it out of the pan: Your Oat Slice will continue to bake as it cools if it’s left in the hot pan, which can result in hardened edges. However, it’ll be too fragile to lift out of the pan straight away. Let it cool for 15 minutes or so, then carefully lift your slice out of the hot pan and place it onto a wire rack to cool completely.
make it your own
You can add any mix-in’s you like to this delicious Oat Slice. I love to add chocolate chips, sultanas or nuts, but you can use whatever you have in the pantry. Here are a few ideas of mix-in’s you can use. I used chocolate chips and pecans in the one pictured here.
- Chocolate chips (milk, dark, white chocolate or Caramilk works well too!)
- Sultanas or raisins (for a little chew)
- Cranberries, blueberries or apricots (tart and fruity)
- Walnuts, almonds or pecans (add some crunch)
- Orange zest (fresh and zingy)
more oat-filled recipes
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Let’s Bake
Easy Oat Slice
A soft and chewy Oat Slice that takes just minutes to make.
Ingredients
- 140 grams (1 cup) plain flour or all purpose flour
- 100 grams (1 cup) whole rolled oats
- 60 grams (1/2 cup) shredded coconut or desiccated coconut
- 135 grams (3/4 cup) brown sugar
- 1 teaspoon baking powder
- 1/4 teaspoon salt
- 115 grams (1/2 cup or 1 stick) unsalted butter, melted
- 1 large egg
- 1 teaspoon vanilla extract
- 1 cup mix-in’s of your choice (see notes)
Instructions
- Preheat oven to 180 C (350 F) standard / 160 C (320 F) fan-forced. Grease and line an 8-inch square pan with baking or parchment paper, ensuring two sides overhang (this will make it easier to remove the slice later).
- In a large mixing bowl, add flour, oats, coconut, brown sugar, baking powder and salt. Give it a quick stir.
- In a small bowl, add melted butter, egg and vanilla. Beat briefly with a fork, just to break up the egg yolk.
- Add butter mixture to dry ingredients and stir using a spatula until combined. Stir through your mix-in’s.
- Transfer mixture to your prepared pan. Use the back of a spoon to press down firmly to form one even layer.
- Bake for approximately 25 minutes or until golden. Leave to cool for 15 minutes, then carefully remove from baking pan and set on a wire rack to cool completely.
- Cut into small squares to serve. Store leftovers in an airtight container at room temperature.
Notes
Coconut: You can use shredded coconut or desiccated coconut for this recipe. Be sure to use unsweetened coconut. If you want to omit the coconut, add an extra 35 grams (1/4 cup) plain flour or all purpose flour.
Mix-in’s: This recipe is highly customisable. I recommend adding 1 cup (total) mix-in’s, but you can choose to add two different mix-in’s (1/2 cup each). The slice pictured has 1/2 cup of chocolate chips and 1/2 chopped pecans. Great options include: chocolate chips, sultanas or raisins, dried cranberries or apricots, almonds, walnuts or macadamias, or even M&M’s. Leave a comment below telling us what your favourite combo is!
Storage: Keep slice in an airtight container at room temperature. Or you can freeze the slice.
Nutrition Information
Matt Stenhouse says
Loved this cross between a cake and a flapjack, my extras were sultanas, cranberries and hazelnuts
Jessica Holmes says
Love that! Great description Matt.
Georgie says
The slice is a bit dry maybe a bit more butter and less cooking time. I did drizzle chocolate over the top.
Jessica Holmes says
Sorry to hear that Georgie. Did you use a baking scale to measure the dry ingredients? An extra tablespoon or two of butter will make all the difference next time.
Fatma Obaid says
Dates will be a great healthy choice I’ll make it
Jessica Holmes says
I hope you enjoy it!
Kent says
I have made this several times now. It is delicious
Jessica Holmes says
Yay! That makes me so happy Kent!
Karen says
What weight of the ingredients do you use
Amey G says
I made a batch of this on sunday and the kids immediately asked me to make more as they love it. Currently have a double batch in the oven and they are already waiting by the oven saying they want to steal it all.
Jessica Holmes says
Hahaha I love that Amey! So glad you and the kids love this one!
Kel says
We love adding frozen raspberries and white chocolate chips. Freezes really well for lunchboxes too
Jessica Holmes says
That’s wonderful to hear Kel!
Pamela Ches says
You are my go to girl when wanting something sweet. We loved the bars and my add-in was chocolate chips and pecans . So very easy and wonderful. Your recipes are always so very awesome.Thank you so much
Jessica Holmes says
I’m so glad to hear that Pamela! Thank you for the lovely feedback.
Carol Walsh says
I’ve made this several times…my add in is 1 cup of paleo mix (mix of seeds, almonds and dried and shredded coconut). I only use 1/2 cup of brown sugar.
I usually omit the desiccated coconut from the recipe…but do add a little extra oats in it’s place. I also have poured melted cooking chocolate on top to make it even more decadent. So easy…no fail recipe.
Jessica Holmes says
That sounds wonderful Carol! I’ll have to try it with those mix-in’s next time!
Deanne Sorrentino says
Easy to make, everyone loves it.
Jessica Holmes says
So happy to hear that Deanne!
Jade says
It is very soft and yummy. I’ve tried another oat slice recipe and it was hard the next day – this one stayed soft and chewy til the next day. We didn’t have any leftovers for the 3rd day so I don’t know how it would’ve been then. 🙂 Definitely saving and printing this, and checking out your other recipes. X
Jessica Holmes says
That’s so wonderful to hear Jade! Thank you for the lovely feedback. I can’t wait to hear what you make next!
Brooke says
Kids love it! I only recommend using no more than 1/2 cup of choc chips for the mix ins, we found 3/4 cup too much (never thought id say that). I think I’ll try a combo of rice crisps, choc chips and cranberries or freeze dried berries
Jessica Holmes says
Love that Brooke! Thank you for your feedback. I usually just use 1/2 cup of chocolate chips with 1/2 cup of something else like you suggested.