I know what you’re thinking. Does the world need another brownie recipe? Well let me know your answer after you’ve baked a batch of my best triple chocolate mudslide brownies. Starring melted chocolate, pure cocoa powder and more chocolate chips – these brownies are seriously chocolatey to say the least, speckled with the gentle crunch of toasted walnuts.
The Key to the Best Brownie Recipe
The order in which the steps are listed below hold the secret to getting the texture right, making the difference between simply-good brownies and the best brownie recipe. It’s all about treating the eggs and the sugar separately. Turns out, if you whip the eggs first, then slowly add the sugar and continue beating long and hard enough – the brownies will emerge from the oven with a lofty lift and shiny crinkly tops just begging to be papped for the ‘gram.
I know what you’re going to ask and sadly, the answer is no. You can’t make this particular recipe for the best brownies without eggs. As highlighted in the recipe below – whipped eggs are what give structure and shape to these thick and chunky brownies. If you’re looking to bake an eggless batch, do have a gander at these recipes for: classic chocolate and Nutella brownies or eggless crinkle top brownies.
More tips for baking the best brownies: Keep a watchful eye on the timer, as you want to remove the brownies when a toothpick or knife plunged in the centre will emerge just a bit moist, with a few fudgy crumbs attached. Speaking woefully from experience, it’s all too easy to over-bake these brownies, losing the gooeyness if you do.
Lastly, let the brownies cool down completely before slicing them (generously). While the recipe calls for you to be gentle when folding in the melted chocolate and dry ingredients, you can be as savage as you like when tearing into these!

Triple Chocolate Mudslide Brownies
Ingredients
- ½ cup unsalted butter (if using salted butter, omit adding salt separately)
- ½ cup + 1 tbsp chopped dark chocolate (you can also use chocolate chips)
- ¾ cup caster sugar (increase up to 1 cup depending on preferred sweetness)
- 2 large eggs
- ⅓ cup natural unsweetened cocoa powder
- 1 tsp vanilla extract
- ½ cup all-purpose flour
- pinch of salt
- ½ cup walnuts, chopped and toasted until fragrant
- ½ cup chocolate chips (We used Bean to Buttons Baking Chocolate Chips)
Instructions
- Preheat oven to 175°C and prep an 8 inch square pan by greasing and lining it with parchment paper. Leave an overhang of the parchment paper on two opposite sides so you can easily lift out the brownies in a “sling”
- Create a double boiler to melt the chocolate and butter: heat about 2 inches of water in a saucepan. Once simmering, reduce the heat to medium low and add a heat-proof mixing bowl on top (placing it carefully so that the base is not touching the water). Add the chopped chocolate and butter, stirring regularly until melted and smooth. Remove the bowl from heat and give it a good stir to make sure that this mixture is evenly melted and completely smooth. Set aside to cool.
- Beat the eggs (preferably using a hand or electric mixer) until they start to froth. Then, slowly add the sugar (over the span of 30 seconds to 1 minute or so) whilst continuing to beat the eggs with the mixer. Continue beating until this wet mixture has an almost creamy consistency. Mix in the vanilla.
- Check the melted butter and chocolate mixture to make sure that it’s now lukewarm (not hot) before stirring it into the eggs and sugar mixture.
- Now sift in the flour, cocoa powder and salt; and fold these dry ingredients into your wet mixture until just combined. You can do so using a rubber spatula, or stir it in at low speed using a hand-held mixer.
- Gently fold in the chocolate chips and toasted walnuts too. Be careful not to overmix.
- Pour the batter into the pan, smoothening out the surface with an offset spatula. Press a few more chocolate chips onto the top and pop the pan in the oven to bake for 18 – 20 minutes or so.
Tips fo getting the timing right
- Remove the brownies when the centre is just about set to touch. A toothpick inserted in the middle will come out moist, with a few fudgy crumbs attached. Remember that the brownies will continue baking when out of the oven, so it’s always better to under-bake in the oven than over-bake if you don’t want dry brownies.
- Let the pan cool on a wire rack for 5 – 10 minutes before removing the parchment paper with the sling. Let the brownies completely cool down on a flat surface before slicing with a sharp (serrated) knife. Enjoy.
Notes
- While these brownies are rich, they are not very sweet. If you prefer your brownies on the sweeter side, you can increase the caster sugar by 2 – 4 tbsp (up to 1 cup).
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Recipe is awesome only if you could mention metric measurements
Hi, I’ve used cup measurements for this recipe; you can use a unit converter on google for the metric measurements !
Can I use confectioners sugar instead of castor sugar. What will be the quantity
Hi, sorry, this recipe calls for caster sugar only
Hi! I read your blog for the first time and I must say it is BEAUTIFUL. The presentation, the photos, your fun writing style, it’s all perfect! Loved this recipe too! ❤
Thank you for the kind words! So delighted with your great feedback 🙂 hope you’ll stop by The Foodie Diaries again!
Cannu suggest egg replacer for triple mudslide brownies
Hi! Not possible I’m afraid. But we’ve just posted a fab recipe for eggless crinkle cookies. Do have a look at that instead!
Hi. The recipe is awesome. Can pl mention which dark chocolate have you used and what is the % of the dark chocolate component.
Is it 50% dark or 45%
Hi! So glad you love the recipe. I use callebaut 70%
These are the BEST brownie recipes, I have never been able to achieve a nice crust and I was elated when I saw these brownies come out of the oven ! Can’t wait to try many more recipes 🙂
Thrilled to hear! Happy baking 🙂 ~ Ayushi
The recepie was so easy to follow! And the brownies were delicious 😋 can’t wait to try the other ones!
Thanks so much for your prompt response.
Another qt if you don’t mind
When you say large eggs…each egg will weigh 50 gms without shell ?
Hi can you suggest egg replacer?
Loved the rich dense texture.. U get to bite into that beautiful light cracked crust and then rich chocolate brownie.
Ur recipes always give that beautiful crinkled top
How wonderful, thank you for your lovely feedback!
The brownie cake from this recipe turned out to be soft and tasty.
: )
So glad to hear, thanks!
Tried your recipe and was very happy with the results. The brownies turned out moist, fudgy and very chocolatey. Thank you for the lovely recipe. Will be making it again and again. It would be great, however, if you could give metric measurements as cup sizes can differ.
Thanks so much for your lovely words and feedback too. I’m definitely trying to make a switch to metric measurements 🙂
This tastes so well mouth watering 😋… To be tried recipe
My baking is the worst. So many failed attempts at making brownies. So this was like my last efforts and they turned out ahmazing. Had to bake them longer bcos maybe my oven is different. Bt th end result is simply DElicious!!! I wish i cud attach th photo 😍
I used 3 regular egg instead of 2 large
1 used 1/4cup brown + 1/4 cup regular sugar and 1/4 cup coco powder bcos i dnt like the brownies too sweet
Also no salt bcos i used regular butter
Best Brownies ever.
I love all the recipes by the author Ayushi. I make sure I follow all the minute details as suggested in the recipe. These brownies turned out so good, with the perfect crinkle top & fudgy on the inside. You will be addicted once you make these.
Thank you SO much for your kind words and feedback! These are our favourite brownies too 🙂