A chewy Chocolate Slice that’s so easy to make – even the kids can help! Studded with chocolate chips and topped with a no-mixer fudgy cocoa powder frosting, this classic slice recipe will be a hit at your next party.
Quick Look Perfect Chocolate Slice
- ⏱ Prep time: 30 minutes
- 🔥 Cook time: 25 minutes
- ⏳ Total time: 55 minutes
- 🍪 Serving: 16 bars
- 🍂 Flavour profile: Soft and chewy bars with a simple chocolate frosting.
- 👌 Difficulty: Easy
- ❤️ Why you will love it: So quick to throw together but serves a crowd. Great for kids’ birthdays and school bake sales.
SUMMARIZE & SAVE THIS CONTENT ON
I’m calling it. This is the Perfect Chocolate Slice 💜. Chewy, chocolatey and topped with a fudgy cocoa frosting. It’s so easy to make and you only need a handful of ingredients – all of which you probably have in your pantry right now.
I think a classic Chocolate Slice is one of the most underrated treats on the planet. There is just something about that perfectly chewy chocolate centre paired with a thick cocoa-laden frosting.
Growing up in Australia, Chocolate Slice is a childhood party favourite, alongside Honey Joys, Chocolate Crackles and Fairy Bread.
It’s easy. It’s simple. It’s quick. But it tastes SO SO good ❤️ And if you love this one, you might like to try my Chocolate Coconut Slice next.
Why you will love this recipe
- Quick and easy: This recipe will become a family favourite because it’s so quick to make – even the kids can help!
- Simple ingredients: My perfect Chocolate Slice recipe uses only regular pantry ingredients and you can decorate it however you like.
- Full of chocolate: Studded with chocolate chips and filled with cocoa powder, it’s sure to cure any chocolate craving.
- Keeps well for days: My Chocolate Slice keeps well in an airtight container for days.
Omg this is the best chocolate slice ever. My go to recipe.
– Ang
Recipe testing
So what’s the secret to the perfect Chocolate Slice? For me, it’s all about the texture.
Similar to a cookie dough, the slice is made with butter, two different types of sugar, vanilla, egg, flour and cocoa powder. For extra texture, I also add a handful of chocolate chips. I actually first published this recipe in 2018. I recently tested this recipe again and made a couple of changes.
A little less sugar, a little more flour and a little baking powder for lift. But I didn’t change a thing about that beautiful frosting.
Instead of a rich Chocolate Buttercream, the frosting is made with cocoa powder – so it’s sweet without being too sweet – and it pairs perfectly with the slice.
Ingredients
If you’ve tried any of my recipes before, you will know that I love to create easy baking recipes that everyone can make – think Chocolate Chip Cookies, Jam Drops, Basic Butter Cake and more.
So I always love to create a recipe that uses regular ingredients that aren’t hard to find. And this Chocolate Slice is right up there as one of my favourite easy recipes.
Here are the key ingredients you will need, including any substitutions you can make. But you can find the full list of ingredients in the recipe card below.
- Caster sugar AND brown sugar: I love to use both sugars in this recipe. Brown sugar adds moisture while caster sugar adds sweetness and crispness. If you don’t have access to caster sugar, you can use granulated sugar instead. Also if you run out of one type of sugar, you can use all caster sugar or all brown sugar if you need.
- Cocoa powder: This recipe uses cocoa powder both in the slice and the frosting. You can use either natural cocoa powder or Dutch processed cocoa powder.
- Baking powder: I like to add a little baking powder to this slice recipe for a little bit of lift. But keep in mind the slice is not a cake and will come out flat – more like a cookie or biscuit. That’s fine! If you don’t have baking powder, you could use self-raising flour instead.
- Icing sugar: Icing sugar, sometimes called powdered sugar or confectioners sugar if what you will need to make this frosting. It’s a very fine sugar that dissolved easily. It cannot really be substituted.
How to make Chocolate Slice
This Chocolate Slice is so easy to make. Here are the step-by-step photos showing how to make each step. The full method and instructions can be found below in the free printable recipe card.
Step 1: In a large mixing bowl, add butter, brown sugar and caster sugar. Mix on medium speed until creamy and combined.
Step 2: Add vanilla and egg. Mix again on medium speed just until combined.
save this recipe
We'll email this post to you, so you can come back to it later!
Step 3: Add plain flour, baking powder, cocoa powder, salt and chocolate chips.
Step 4: Mix briefly on low speed or by hand until combined. Mixture will be thick.
Step 5: Transfer chocolate batter into prepared tin and spread it out into one even layer.
Step 6: Bake chocolate slice for 22-25 minutes or until it’s no longer wet or sticky. Leave it to cool completely.
Step 7: In a large mixing bowl, add icing sugar, cocoa powder and butter.
Step 8: Add 1 tablespoon boiling water and stir until thick and smooth. Add an extra tablespoon of water if it’s too thick.
Step 9: Spread the frosting into one even layer on top of the cooled chocolate slice.
Step 10: Scatter sprinkles all over the top of the chocolate frosting.
Storage and make-ahead tips
Storage: Once you have frosted the slice, you can store it in an airtight container at room temperature or in the fridge. I recommend bringing it back to room temperature before serving.
Make-ahead: This slice won’t freeze very well due to the soft, fudgy frosting. You can freeze it without the frosting and ice it fresh. You can definitely make the slice a few days in advance though as it keeps well.
Jess’s Tips for the perfect Chocolate Slice
- Try not to over-bake the slice. I prefer to slightly underbake my Chocolate Slice to make it nice and chewy in the middle.
- Once you make the frosting, quickly frost the slice and then let it sit for a few minutes so it can set. This will make it easier to slice.
- This Chocolate Slice keeps well for 3-4 days and tastes even better the next day!
Chocolate slice faqs
If you added too much flour and/or cocoa powder, your slice could come out a little dry. Over-baking will also make your slice dry and crispy. I prefer to under-bake mine – and always measure your dry ingredients using a kitchen scale.
Yes! You can double this recipe and bake it in a 9 by 13-inch baking pan for a larger chocolate slice.
I love to decorate mine with sprinkles, hundreds and thousands or chocolate chips. You can really decorate it however you like.
A brownie is thicker (taller) with a soft texture due to the high content of butter, melted chocolate and eggs. Chocolate Slice is closer to the texture of a soft baked cookie bar. You will love it. If you are looking for a great brownie recipe, try my Big Batch Brownies.
More slice recipes we love
Did you make this recipe? Show me a photo in our baking community. Join me on Instagram, YouTube, Facebook, Pinterest and TikTok for more amazing recipes or buy my NEW cookbook, Something Sweet.
Let’s Bake
Perfect Chocolate Slice recipe
An easy baked Chocolate Slice with a creamy chocolate frosting.
Ingredients
Chocolate slice
- 115 grams (1/2 cup or 1 stick) unsalted butter, softened
- 50 grams (1/4 cup) caster sugar or granulated sugar
- 90 grams (1/2 cup) brown sugar
- 1 teaspoon vanilla extract
- 1 large egg
- 140 grams (1 cup) plain flour or all purpose flour
- 1/2 teaspoon baking powder
- 1/4 teaspoon salt
- 20 grams (1/4 cup) cocoa powder
- 80 grams (1/2 cup) chocolate chips
Chocolate frosting
- 190 grams (1 and 1/2 cups) icing sugar or powdered sugar, sifted
- 20 grams (1/4 cup) cocoa powder, sifted
- 1 tablespoon butter, very soft
- 2 tablespoons boiling water
- Sprinkles, to decorate, optional
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.
- In a large mixing bowl, add butter, caster sugar and brown sugar. Using an electric mixer on medium speed, beat until creamy and combined.
- Add the vanilla and egg. Beat again on medium speed until combined.
- Add the flour, baking powder, salt, cocoa powder and chocolate chips. Beat on low speed or stir by hand until combined. Don’t worry if it looks dry at first. It should be thick and chocolate-y.
- Transfer the chocolate batter to your prepared tin and press down firmly to form one even layer.
- Bake for approximately 22-25 minutes or until it’s firm to the touch. Transfer to a wire rack to cool completely.
- Make the frosting. In a large mixing bowl, add the icing sugar, cocoa powder and butter. Add 1 tablespoon boiling water and stir to combine.
- If the frosting is too thick, add other tablespoon of boiling water. Transfer the chocolate frosting onto the slice and gently smooth over the cooled chocolate slice.
- Scatter over the sprinkles. Leave slice for 15 minutes to set, then carefully cut into squares.
Notes
Cocoa powder: This recipe uses cocoa powder both in the slice and the frosting. You can use either natural cocoa powder or Dutch processed cocoa powder.
Storage: Once you have frosted the slice, you can store it in an airtight container at room temperature or in the fridge. I recommend bringing it back to room temperature before serving.
Recipe update: I first published this slice recipe in 2018. I have since retested it and made a few changes. I’ve lowered the sugar content, increased the flour and added a touch of baking powder. You will love it! But if you loved the old recipe, follow above but add 100 grams (1/2 cup) caster sugar, 105 grams (3/4 cup) plain flour and omit the baking powder.
Nutrition Information
Serving Size: 1 slice Calories: 205 Sugar: 23.2 g Sodium: 8.1 mg Fat: 8.7 g Carbohydrates: 32 g Protein: 2.2 g Cholesterol: 29 mg
Hi, I’m Jess, the creator of Sweetest Menu and the author of Something Sweet. A self-taught baker and published recipe writer who can’t stop making easy and delicious baking recipes.
Zoe says
I love this so much!! I make it all the time. I use vegan butter and an egg replacer but 10/10
Jessica Holmes says
Aww love hearing that Zoe!
Kay Goldner says
The family loved it
Jessica Holmes says
So happy to hear that!
Bronwyn Dyer says
Very nice chocolate slice lovely not to have coconut,will be making this again,as nice as any slice bought in a coffee shop.
Jessica Holmes says
Love hearing that!
Mojoblogs says
This looks really good! I am excited to try this. I bet this will be amazing. Thinking of putting nuts on this recipe to add more texture. Thank you so much for this! More power! 🙂
Jessica Holmes says
That would be lovely! Hope you enjoy it@
TRACY says
Hi
Just wondering if you can freeze this slice. It’s so yummy that if I don’t freeze some i’ll worried i’ll eat it all!!
Thanks
TC
Jessica Holmes says
Hahaha so glad you like it Tracy! Yes you can freeze it!
millie jasper says
Yummm. I used raw sugar instead of caster, turned out fine just had to add another tablespoon and a half of butter and cream for longer. Absolutely amazing plus super easy!
Jessica Holmes says
So glad you enjoyed it Millie! And great tip re: raw sugar.
Cheryl says
I was looking for a chocolate slice without coconut and came upon your recipe.. The packet of chocolate chips I had in my pantry had mysteriously disappeared (-; and so I substituted a block of Lindt Orange Intense dark chocolate chopped up. It has turned out deliciously chocolatey & particularly nice with the orange/Jaffa taste from the chocolate . Thanks for an easy, scrumptious recipe which I’m sure to make again..
Jessica Holmes says
Ooh a chocolate orange twist! I love it! So glad you enjoyed it Cheryl! ❤️
Amali says
Absolutely yum! I think I messed up somewhere and it turned out quite flat …. divided it and stacked the halves to give it height. Delicious!!!!
Jessica Holmes says
Aww so glad you enjoyed it Amali!! ❤️
Heather says
Made a batch for my after school extra grandchildren. The girls managed to dispense of them in two afternoons, but the boys still like Ginger Crunch best. Thanks for the lovely recipe.
Jessica Holmes says
Aww so glad they enjoyed it Heather! ☺️ Thank you for trying one of my recipes!
Pam Gayford says
Made this recipe on Sunday,took some to my Women’s Institute Crochet group today…All gone,which was Fabulous but I had promised some to my 2 Grandchildren…So made another batch this afternoon took them around after school..Just had a phone call from Granddaughter….All gone…So abit of a theme here.They are sooooooo good they just don’t last..A double batch weighed out to make tomorrow.Thank-you for this Fantastic recipe…
Jessica Holmes says
Hi Pam! Well, what a lovely comment to wake up to! Thank you so much for your kind words. I’m so pleased you and your friends and family enjoyed this slice – that’s what baking is all about ☺️ x
Cheryl says
In Canada we call these Brownies! I’m looking forward to trying these and seeing how they stack up against my “old standby”.
Jessica Holmes says
Hi Cheryl! Awesome, I hope you like them! 😊 Take a photo and share with me on Instagram if you can #sweetestmenu
hanifa says
how do i make this in a 9X13 pan?
Jessica Holmes says
Hi! This recipe has been tested in an 8 by 8 inch square pan. To fit into a 9 x 13, you would need to double the recipe and potentially adjust the cooking time, depending on how thick the slice is. Hope that helps!
Sarah Somerville says
Made this today just because the photos looked so good! 😛 Was just as yummy as it looked! x
Jessica Holmes says
Awesome! So glad you enjoyed it Sarah! 😊
Dagmara says
Hello Jessica,
please let me know, what are the dimensions of your baking tin?
Jessica Holmes says
Hi there, I used an 8 inch square baking tin. Hope that helps!
Natalie says
Looks so delicious and chocolatey! I love how easy these are to make!
Jessica Holmes says
Thanks Natalie!