It all began with a Halloween party and a desperate need for a dessert that would wow the crowd. I wanted something more than just your average brownies or cookies—and then it hit me: why not both? That’s how these spooky Halloween Brookies were born, a perfect combination of fudgy brownies and crunchy, chocolatey cornflake topping. They’re the ultimate crowd-pleaser, and they vanish faster than a ghost in the night!
These brookies are not only incredibly delicious but also surprisingly easy to make. With just a few simple steps, you’ll have a decadent dessert that looks like you spent hours in the kitchen. Whether you’re a seasoned baker or just starting out, this recipe is a guaranteed success. So grab your apron and get ready to create some Halloween magic!
Why You’ll Love It
These Halloween Brookies aren’t just a treat; they’re a whole experience! The fudgy brownie base provides that rich, chocolatey goodness we all crave, while the crispy cornflake topping adds a delightful crunch that takes it over the top. Perfect for Halloween parties or a spooky movie night at home, these brookies are guaranteed to disappear fast. They’re easy to customize with your favorite Halloween candies, and the combination of textures will make them an instant hit with kids and adults alike.
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Halloween Brookies
- Total Time: 1 hour
- Yield: 16 servings
Description
Indulge in the spooky sweetness of Halloween Brookies, a delectable fusion of fudgy brownies and crunchy cornflake topping. Easy to make and customize with your favorite Halloween candies, these brookies are perfect for parties or a spooky movie night.
Ingredients
- 200g unsalted butter
- 300g caster sugar
- 200g dark chocolate
- 3 large eggs
- 100g plain flour
- 30g cocoa powder
- 75g unsalted butter
- 300g milk chocolate
- 9 tablespoons golden syrup
- 150g cornflakes
Instructions
- Preheat oven to 180°C (350°F) / 160°C (320°F) fan. Line a 9″x9″ baking tray.
- Melt dark chocolate over a double boiler. Set aside to cool.
- Melt butter, whisk with sugar until pale and smooth.
- Add eggs one at a time, whisking thoroughly.
- Fold in cooled chocolate, flour, and cocoa powder.
- Bake for 25-30 minutes, until slightly wobbly in the center.
- Cool completely on a wire rack.
- Melt milk chocolate, golden syrup, and butter for topping.
- Coat cornflakes with the melted chocolate mixture.
- Spread cornflake mixture over cooled brownies.
- Refrigerate for at least 30 minutes, then cut into squares.
Notes
For extra fudgy brownies, slightly underbake them. Use high-quality dark chocolate (at least 70% cocoa) for the brownie base. Avoid overmixing the batter to prevent tough brownies. Consider adding Halloween candies to the topping for an extra spooky touch.
- Prep Time: 20 mins
- Cook Time: 30 mins
- Category: Dessert
- Method: Baking
- Cuisine: American
Ingredient Overview

Here’s what you’ll need to whip up a batch of these bewitching Halloween Brookies:
For the Brownies:
- 200g unsalted butter
- 300g caster sugar (granulated sugar works too!)
- 200g dark chocolate (at least 70% cocoa)
- 3 large eggs
- 100g plain flour (all-purpose flour)
- 30g cocoa powder
For the Cornflakes Layer:
- 75g unsalted butter
- 300g milk chocolate
- 9 tablespoons golden syrup (light corn syrup can be substituted)
- 150g cornflakes
Step-by-Step Instructions
Step 1: Prepare the Brownie Base
Preheat your oven to 180°C (350°F) standard / 160°C (320°F) fan. Line a 9″x9″ square baking tray with parchment paper, leaving some overhang on the sides for easy removal later.
Step 2: Melt the Chocolate
Break the dark chocolate into chunks and gently melt over a double boiler. If you don’t have a double boiler, you can use a heatproof bowl set over a simmering pot of water. Make sure the bottom of the bowl doesn’t touch the water. Once the chocolate is smooth, remove from the heat and set aside to cool.
Step 3: Combine the Wet Ingredients
Melt the butter in a microwave in 20-second bursts until smooth. Add the melted butter and caster sugar to a bowl and whisk together for about 1 minute until pale and smooth.
Step 4: Add the Eggs
Add the eggs one at a time, whisking thoroughly after each addition. The mixture should be light, smooth, and well combined.
Step 5: Combine Dry Ingredients and Chocolate
Gently fold in the cooled melted dark chocolate. Then, sift in the flour and cocoa powder. Fold everything together just until no pockets of flour remain. Be careful not to overmix!
Step 6: Bake the Brownies
Pour the brownie batter into the prepared baking tray and spread evenly. Bake for 25-30 minutes, or until the center has a very slight wobble and a toothpick inserted into the center comes out with a few moist crumbs. Don’t overbake, or your brownies will become cakey instead of fudgy.
Step 7: Cool the Brownies
Once baked, let the brownies cool completely in the tray on a wire rack before adding the cornflake layer.
Step 8: Prepare the Cornflake Topping
While the brownies are cooling, melt the milk chocolate, golden syrup, and butter together in a double boiler or in the microwave in 20-second bursts, stirring until smooth.
Step 9: Assemble the Brookies
Pour the melted chocolate mixture over the cornflakes and mix until they’re completely coated. Spread the cornflake mixture evenly over the cooled brownies, pressing down gently to create a compact layer.
Step 10: Chill and Cut
Refrigerate the brookies for at least 30 minutes to allow the topping to set. Once firm, cut into squares and serve.
Pro Tips

- For extra fudgy brownies, underbake them slightly. You want a slightly gooey center, which will firm up as they cool. Don’t be tempted to continue to cook them fully, as this will give you cakey brownies.
- Use high-quality chocolate for the best flavor. I recommend using dark chocolate with at least 70% cocoa for the brownie base.
- Don’t overmix the brownie batter! Overmixing can develop the gluten in the flour, resulting in tough brownies. Mix only until the ingredients are just combined. For more baking tips, check out our guide on essential baking tools.
- If you want to add a spooky touch, decorate the brookies with Halloween candies like candy corn, gummy worms, or sprinkles before the topping sets.
Recipe Variations
- Nutty Brookies: Add a handful of chopped nuts, such as pecans, walnuts, or peanuts, to the cornflake mixture for added crunch and flavor.
- White Chocolate Delight: Swap the milk chocolate in the cornflake topping for white chocolate and add some festive sprinkles for a fun twist.
- Peanut Butter Dream: Drizzle melted peanut butter over the brownie base before adding the cornflake topping for a decadent peanut butter treat. For peanut butter lovers, you may also enjoy our Peanut Butter Mochi recipe.
- Spooky Swirls: Before baking, swirl a few tablespoons of peanut butter or Nutella into the brownie batter for a marbled effect.
How long do these Halloween Brookies last?
Stored in an airtight container in the refrigerator, these brookies will stay fresh and fudgy for up to 5 days.
Can I freeze these brookies?
Yes, you can freeze the brookies for up to 3 months. Wrap them tightly in plastic wrap and then place them in a freezer-safe container.
Can I use different cereals for the topping?
Absolutely! Feel free to experiment with other cereals like Rice Krispies, Chex, or even pretzels for a different kind of crunch.
Can I make these brookies ahead of time?
Yes, these are a great make-ahead dessert! Prepare them up to 2 days in advance and store them in the refrigerator until ready to serve.
Serving Suggestions

These Halloween Brookies are delicious on their own, but you can take them to the next level with a few simple additions. Serve them warm with a scoop of vanilla ice cream or a dollop of whipped cream. A drizzle of caramel sauce or chocolate syrup would also be a decadent touch. For a festive Halloween party, arrange them on a platter with other spooky treats like spiderweb cookies and pumpkin-shaped candies.
Final Thoughts
These Halloween Brookies are the perfect combination of spooky and sweet! They’re easy to make, incredibly delicious, and sure to impress your guests. Whether you’re hosting a Halloween party or simply craving a decadent treat, this recipe is a winner. Now, share the spooky sweetness and tag us on social media! We’d love to see your creations. Find us on Facebook, Instagram, or Pinterest. Don’t forget to check out our other delicious dessert recipes for more inspiration!