Halloween Spiderweb Brownies – A Spooky and Delicious Treat

The first time I made these Halloween Spiderweb Brownies for a Halloween party, I left the brownies on the table and went to grab a drink. By the time I came back, all that was left was a single marshmallow strand… stuck to a tiny hand. These Halloween Spiderweb Brownies are spooky, sticky, and always the first to vanish.

Why You’ll Love These Halloween Spiderweb Brownies

These Halloween Spiderweb Brownies are rich and fudgy with just the right chew.
Inside, there’s a gooey salted caramel layer that surprises everyone with each bite.
The marshmallow spiderweb adds a fun, spooky twist that’s also delicious.
They’re easy to make with everyday ingredients you probably already have.
They make a terrific Halloween centerpiece that looks impressive but is super doable.

What You Need to Make Halloween Spiderweb Brownies

For the Brownies

• 150g unsalted butter, chopped
• 150g dark chocolate (70% cocoa solids)
• 2 large eggs, room temp
• 220g white caster sugar
• 150g self-raising flour

For the Salted Caramel Sauce

• 100g granulated sugar
• 40g unsalted butter, chopped and room temp
• 100g double cream, room temp
• ½ tsp salt

For the Spiderweb Decoration

• 100g white marshmallows
• Edible eyes (optional, but fun!)

Step-by-Step Instructions

Make the Salted Caramel Sauce

Start with a light-colored stainless steel pan so you can watch the color closely.
Over gas: stir the sugar constantly until it melts and turns amber.
On induction: don’t stir—just swirl the pan now and then.
Once golden, remove from heat. Carefully whisk in butter, then cream, then salt.
It might bubble up, so keep your hands safe.
Chill in the fridge for at least 1 hour until thickened.

Prepare the Brownie Batter

Preheat your oven to 180°C (fan).
Line an 8×8 inch tin with baking paper.
Melt butter and chocolate together in the microwave in 30-second bursts, stirring each time.
Whisk eggs and sugar in a large bowl until frothy.
Stir in the melted chocolate mix, then fold in the flour until just combined.

Assemble and Bake

Pour half of the brownie batter into your lined tin.
Spoon the thick caramel over the batter, leaving a little space from the edges.
Cover with the rest of the brownie batter and smooth the top.
Bake for 18 to 20 minutes, until the top is set and the edges are cracked.
It’s okay if the middle has a slight wobble. That’s the fudgy magic.
Cool completely in the tin—at least 4 hours at room temp or 2 hours in the fridge.

Create the Spiderweb Decoration

Melt marshmallows in a microwave-safe bowl for 20 to 30 seconds.
Let them cool for a minute. Then, using clean fingers, stretch strands of marshmallow and drape them over the brownies like a web.
Stick on some edible eyes for that haunted finishing touch.

Expert Tips for Perfect Results

Use granulated sugar instead of caster for caramel—it melts more slowly and gives you more control.
Don’t take your eyes off the caramel—it can go from golden to burnt fast.
Use a whisk when adding butter and cream to the caramel to avoid splashing.
Brownies are done when the top is no longer shiny and the edges start to crack.
Let them cool fully for clean slices and the best texture.
Using a larger or smaller pan? Adjust the bake time—shorter for larger, longer for smaller.
Short on time? Store-bought caramel works too.

Troubleshooting Common Issues

Brownies too dry? You likely overbaked them. Next time, try 3–4 minutes less.
Caramel too runny or hard? Let it chill longer in the fridge, or double-check your measurements.
Marshmallow web too sticky? Let it cool a bit before handling. It firms up fast.

Recipe FAQs

Spiderweb Brownies Recipe Card

Print

More Such Recipes

Looking for more spooky treats? Try these:

• Gluten-Free Mummy Brownies for a Halloween Party
• Shredded Chicken and Rice Stuffed Peppers for Halloween
• Pumpkin S’mores Cookies – A Fall Favorite
• Mini Pumpkin Pie Crescent Rolls – A Quick Halloween Dessert

Final Thoughts

These Halloween Spiderweb Brownies are rich, messy, and such a blast to make.
Kids love them. Grown-ups sneak seconds. And the marshmallow web always gets a few “how did you do that?” questions.
Perfect for parties, bake sales, or spooky movie nights.

For more festive ideas and baking inspo, check out our Pinterest board or join the fun on Facebook.