Halloween Chocolate Tart with Bloody Spiderweb Decoration

If you want a show-stopping Halloween dessert, this no-bake Bloody Spider Web Chocolate Tart is it. It looks gruesome yet tastes incredible—rich chocolate ganache over a crunchy Oreo base with a hidden “bloody” caramel layer. It’s simple to assemble, makes a striking impression when sliced, and can be prepared ahead of time.

If you enjoy eerie desserts, try blood spatter cookies or bloody surprise cupcakes—equally fun and dramatic. For something different this year, choose original ideas that still taste amazing.

This recipe includes step-by-step photos, practical tips, and a video to guide you through every stage. It’s quick, requires no baking, and guarantees a big reaction when guests cut into it.

Pair it with a Halloween-themed drink for a complete party spread. Since it can be made in advance, it’s ideal for entertaining.

Recipe tips

• Use a food processor to blitz the Oreos; their cream filling makes them harder to crush with a rolling pin.
• Chop the dark chocolate finely so it melts evenly and quickly when hot cream is added.
• Work quickly when piping the white chocolate web—ganache sets fast.
• If the chocolate hasn’t fully melted after resting, stir and microwave in 10-second intervals, stirring between each burst.
• Read the recipe through before starting to avoid surprises.
• Do not boil the cream—heat until it just begins to bubble.

Bloody Spider Web Chocolate Tart – Step by Step Picture Recipe

(For a printer-friendly version, see the recipe card below.)

This recipe includes both UK metric and US cup measurements.

Ingredients

Makes 8–10 servings.

For the base

• 245g (8.5 oz) Oreos
• 80g (1/3 cup) unsalted butter

For the filling

• 200g (7 oz) caramel (I used Carnation)
• Red food colouring gel
• 175g (6 oz) dark chocolate, finely chopped
• 50g (1/4 cup) unsalted butter, room temperature
• 165ml (2/3 cup) double cream

For decoration

• 50g (1.75 oz) white chocolate
• Plastic spiders (optional)

Essential equipment

• 20cm (8″) loose-bottomed tart tin
• Food processor
• Disposable piping bag

Instructions

To make the base: place the Oreos (including the cream) into a food processor and blitz to fine crumbs. Melt the butter gently and add to the crumbs, pulsing until the mixture clumps together.

Press the mixture firmly into the base and sides of the tart tin and freeze while you prepare the filling.

Mix the caramel with red food gel a little at a time until you reach the desired “blood” colour. Pour the coloured caramel over the chilled Oreo base and return to the freezer.

For the ganache: finely chop the dark chocolate and cut the butter into small pieces. Place both in a heatproof bowl. Heat the double cream just to boiling, then pour it over the chocolate and butter. Let sit for 5 minutes, then stir until smooth and glossy.

Pour the ganache over the set caramel layer and smooth the surface. Work quickly for the decoration as the ganache will begin to set.

Decoration instructions

Melt the white chocolate in short bursts in the microwave, stirring between intervals until smooth. Transfer to a piping bag and snip a small opening. Starting from the centre, pipe a spiral of white chocolate outward.

Use a skewer or small knife to drag lines from the center to the edge to create a spider web pattern. Chill the tart in the fridge for at least one hour to set. Store refrigerated and consume within 3–4 days.

Serve and enjoy the big reactions when the tart is sliced and the red caramel spills out. This dessert is a perfect balance of spooky presentation and delicious flavor.

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No Bake Bloody Spider Web Chocolate Tart

Yield:
10 Servings

Prep Time:
25 minutes

Chilling Time:
1 hour

Total Time:
1 hour 25 minutes

This terrifyingly tasty tart is the perfect no-bake Halloween dessert—easy to make and full of dramatic effect.

Ingredients

For the Base

• 245g (8.5 oz) Oreos
• 80g (1/3 cup) unsalted butter

For the Filling

• 200g (7 oz) caramel
• Red food colouring gel
• 175g (6 oz) dark chocolate, finely chopped
• 50g (1/4 cup) unsalted butter, room temperature
• 165ml (2/3 cup) double cream

To Decorate

• 50g (1.75 oz) white chocolate
• Plastic spiders (optional)

Essential Equipment

• 20cm (8″) loose-bottomed tart tin
• Food processor
• Disposable piping bag

Instructions

To Make the Base

1. Blitz the Oreos (including the fillings) in a food processor until fine crumbs form. Add melted butter and pulse until the mixture starts to clump. Press into the base and sides of the tart tin. Freeze until needed.

To Make the Filling

1. Mix red food colouring into the caramel a little at a time until you reach your desired shade. Pour the coloured caramel over the chilled Oreo base and freeze again.
2. Put the chopped dark chocolate and butter into a heatproof bowl. Heat the double cream until it just starts to bubble, then pour over the chocolate. Leave for 5 minutes, then stir until smooth and shiny.
3. Pour the ganache over the caramel layer and smooth the surface.
4. Melt the white chocolate, transfer to a piping bag, and pipe a spiral from the centre outward. Drag a skewer from the centre to the edge at intervals to form a spider web. Chill for at least 1 hour until set.

Notes

*I used Carnation tinned caramel.

Storage: Refrigerate the tart to set for at least one hour before serving. Store in the fridge and consume within 3–4 days.

Tips

• Use a food processor to crush the Oreos for best texture.
• Chop chocolate finely for even melting.
• Work quickly when piping the web—ganache sets fast.
• If the chocolate hasn’t melted completely, microwave in 10-second bursts, stirring in between.
• Do not allow the cream to boil—heat until it just starts to bubble.

Nutrition Information:

Yield: 10
Serving Size: 1

Amount Per Serving:
Calories: 470Total Fat: 30gSaturated Fat: 17gTrans Fat: 0gUnsaturated Fat: 11gCholesterol: 54mgSodium: 192mgCarbohydrates: 49gFiber: 2gSugar: 37gProtein: 4g

Nutritional information is a guideline only. Check labels for allergens where applicable.