Fudgy slime pistachio blondies. Rich, gooey & packed with nutty flavour! The perfect spooky Halloween treat kids and adults will love!
Pistachio Blondies
How delicious do these Slime Pistachio Blondies sound?! Don’t worry, the “slime” part is totally edible (and so tasty!). This easy Halloween blondie recipe is made using the brand new Carnation Pistachio Drizzle, which creates the perfect gooey, fudgy texture while adding that rich, nutty pistachio flavour. The bright green drizzle gives these Halloween treats a fun, spooky twist that both kids and adults will love!
These pistachio blondies are the ultimate Halloween baking idea, chewy, buttery, and packed with pistachio goodness. Whether you’re baking for a party, making a fun treat for the kids, or just want a unique blondie recipe, this one ticks all the boxes. The Carnation pistachio drizzle gives the blondies a gooey centre and makes them look delightfully “slimy” perfect for spooky baking!
If you’re a fan of easy blondie recipes, Halloween desserts, or anything pistachio flavoured, this bake is for you. It’s simple, spooky, and seriously delicious. These gooey pistachio blondies are the perfect balance of rich, sweet, and nutty, the ultimate Halloween treat to impress your family and friends this spooky season!
Why You’ll Love These Slime Pistachio Blondies
- Fudgy & Gooey Texture– Just like a perfect blondie should be, soft, chewy, and rich.
- Spooky Fun Look– That green slime adds the ultimate Halloween touch.
- Unique Pistachio Flavour– Made with Carnation Pistachio Drizzle and chopped pistachios, these pistachio blondies have a rich, nutty, and slightly sweet flavour that pairs perfectly with the chewy, fudgy blondie base.
- Easy to Make– A one-bowl recipe that’s beginner-friendly and bakes in 30 minutes.
- Perfect for Lunchboxes or Parties– These blondies hold their shape and stay moist for days.
- Kid-Friendly Halloween Baking– This is a super easy blondie recipe that’s perfect for baking with kids. They’ll love swirling the green drizzle and decorating their spooky blondies for Halloween.
Ingredients
- White chocolate– I use melted white chocolate in the base of this recipe. i just use a supermarket own chocolate, the cheapest I can find really!
- Butter– I suggest using Unsalted Butter for blondies but you can use baking spread if you’d like.
- Caster sugar– I use just caster sugar for my blondies For sweetness and added chewiness. You can use light brown sugar if you’d like to add some caramel flavours depending on what add ins you use!
- Eggs– I use two eggs for structure and another egg yolk for richness. You can save the egg white for another bake!
- Golden Syrup– I love adding golden syrup into my blondies, it adds sweetness and makes the texture even better trust me on this one!
- Plain flour & Cornflour– I use plain flour and cornflour in this recipe. Cornflour helps achieve a fudgy, chewy texture. If you don’t have cornflour/cornstarch then you can just use plain flour! Don’t worry the blondies will still be amazing!
- Chopped pistachios– Add crunch and extra flavour.
- Pistachio Drizzle- I used the new Carnations pistachio drizzle in the blondie, as well as using it for the slime decoration.
Tips & Tricks
- Store in an airtight container for up to 3 days or freeze for longer freshness.
- For that gooey, fudgy texture every blondie lover craves, bake until the edges are just golden and the centre is slightly soft. Overbaking will make them cakey instead of chewy. Perfect fudgy blondies should feel set but still moist in the middle.
- I mix my blondies just until the ingredients are combined. Some recipes say to whip up your eggs or butter until light and fluffy but this isn’t Necessary for these blondies!
- Let them cool fully before slicing for clean edges.
- Make sure to use the right sized baking tin. I use a 9×9″ square tin for these blondies. This is the tin I use.
- If you’d like more in depth tips and tricks to get the best fudgy blondies, check out this blog post.
Frequently Asked Questions
How long do these pistachio blondies last?
Your pistachio blondies will stay fresh for about 4–5 days in an airtight container at room temperature. You can also refrigerate them for up to a week for a firmer, chilled texture.
Can I freeze these blondies?
Yes. wrap them undecorated individually in cling film and store in an airtight container in the freezer for up to 3 months.
Can I Use Chocolate Chips Instead?
You can, but for the best melt and texture, white chocolate bars are better in the blondie mixture!
How Do I Know If My Blondies Are Baked?
This is one of the hardest things when it comes to baking blondies, knowing when to take them out at the right time. Using a skewer won’t help as blondies will still be gooey, similar to a brownie when they’re removed from the oven! They should have a slight wobble in the middle when you remove them from the oven, They will also set more as they cool down, wait until they are cool and put them in the fridge for 3-4 hours to ensure you get the BEST blondie texture. (Put it in the fridge still in the tin).
What Is The Difference Between Blondies And Brownies?
Blondies are made with white chocolate instead of cocoa and dark chocolate. They have a rich, buttery, and sweet vanilla flavour compared to the fudgy, chocolatey taste of brownies.
Why Did My Blondies Come Out Cakey Instead Of Fudgy?
Cakey blondies may result from over-mixing or over-baking. Be sure to mix just until combined and bake until just set in the centre. Also make sure you’re using plain flour instead of self raising flour!
Can I use another drizzle instead of Carnation Pistachio Drizzle?
Yes! While Carnation Pistachio Drizzle adds a unique nutty and sweet flavour (plus that spooky green colour perfect for Halloween baking), you can swap it for white chocolate ganache, caramel, or even peanut butter drizzle if you prefer.
What’s the best way to serve these Halloween blondies?
They’re delicious warm with a scoop of ice cream, or at room temperature for parties and Halloween dessert tables. The green pistachio drizzle makes them eye-catching and fun for both kids and adults.
Recommended Equipment & Ingredients
- Stand mixer Use code BITEOFBAKES for 20% off.
- Electric hand whisk
- Mixing Bowl Mine is pink of course!
- Scales
- Baking Tin (Square 9×9″).
- Carnations Pistachio Drizzle
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If you’re searching for a fun and easy Halloween dessert, these Slime Pistachio Blondies are the perfect recipe to try! They’re rich, gooey, and packed with sweet, nutty flavour, everything you want from a fudgy blondie with a spooky twist.
The Carnation Pistachio Drizzle not only gives them that eye-catching “slime” look but also adds an irresistible creamy pistachio flavour that takes these blondies to the next level. Whether you’re baking for a Halloween party, an after-school treat, or just want to impress your friends and family, these blondies are guaranteed to be a hit.
What makes this Halloween blondie recipe even better is how quick and simple it is to make, no fancy ingredients, no complicated steps, just pure, delicious fun. They’re also perfect for baking with kids, letting them help drizzle the slime and decorate their spooky creations.
These Slime Pistachio Blondies prove that Halloween baking doesn’t need to be tricky, just a touch of creativity, a swirl of green drizzle, and you’ve got the ultimate spooky bake that’s both kid- and adult-approved!
So this spooky season, grab your apron, melt some butter, and get ready to bake the most deliciously gooey pistachio blondies ever.
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Slime Pistachio Blondies
Ingredients
- 200g White Chocolate
- 175g Unsalted Butter
- 200g Caster Sugar
- 2 Medium Eggs (50g Each).
- 1 Egg Yolk
- 280g Plain Flour
- 20g Cornflour
- 30g Golden Syrup
- 200g White Chocolate (Chopped).
- 150g Chopped Pistachios
- Carnations Pistachio Drizzle (To swirl into the blondie and as decoration).
- Edible Candy Eyes
Instructions
- Preheat the oven to Gas Mark 4 / 180ºc and line an 9×9" square tin with parchment paper.
- Add the unsalted butter and white chocolate to a bowl and melt in short bursts in the microwave, stirring well each time, until smooth. (Ensure you stir well in between to stop it from splitting).
- Once melted, stir in your caster sugar until combined.
- Add in the eggs and golden syrup and stir again until combined.
- Mix through the plain flour, and cornflour until you can no longer see any flour. Add in your white chocolate chunks and chopped pistachios and stir until evenly distributed.
- Pour the mixture into the lined tin and swirl in some pistachio drizzle and bake for 30-35 minutes (mine take 30 minutes), take them out the oven when there is an ever so slight wobble in the middle.
- Let the blondies cool in the tin fully, and then set the blondies in the fridge for 3-4 hours.
- Once chilled, slice into 9 equal squares. Add some pistachio drizzle on top of each square and decorate with edible eyes and sprinkles.
- Happy Halloween Baking! x
Notes
- Your pistachio blondies will stay fresh for about 4–5 days in an airtight container at room temperature. You can also refrigerate them for up to a week for a firmer, chilled texture.
- wrap undecorated blondies individually in cling film and store in an airtight container in the freezer for up to 3 months.