Bloody, fudgy, and frightfully fun brownie trays for your next horror-themed party.

If you’re planning a night of thrills, chills, and a little playful gore, these Slash n Stab Brownie Trays are the perfect finale. Fudgy brownies get a “bloody” raspberry jam layer, a swirl of dark cocoa frosting, and creepy edible toppers that make them look straight out of a horror flick.

Why You’ll Love This Recipe

• Fudgy brownies baked in individual trays for the perfect serving size
• Dark cocoa frosting for rich chocolate flavor
• Raspberry jam adds a “bloody” Halloween twist
• Creepy edible decorations make them slasher-movie ready
• Perfect for Halloween parties, horror marathons, or murder mystery nights

Ingredient Notes

• Brownie mix- The base of the trays, rich and fudgy.
• Raspberry jam- Brings the “bloody” effect and a tart contrast to the chocolate.
• Dark cocoa powder-  Deepens the frosting flavor and color.
• Edible Halloween decorations- The finishing touch that makes them look slasher-ready.

Before You Bake

Do I need special trays for this recipe?
Yes, the narrow trays create the “slash n stab” look and make individual servings. You can also use mini loaf pans if you don’t have the linked trays.

Can I use a different jam instead of raspberry?
Absolutely. Strawberry or cherry jam both give the same “bloody” effect with a slightly different flavor.

Does the frosting need to be piped?
Not at all. You can pipe it for neat swirls or spread it rustic-style—it will still look creepy and taste delicious.

Slash n Stab Brownie Trays

Print Recipe

Pin Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star

No reviews

• Author: Taryn Camp

Ingredients

Scale 1x2x3x

• 1 box brownie mix + ingredients listed on the package
• 1 stick salted butter
• 2 cups powdered sugar
• 1/4 cup dark cocoa powder- use dark or black cocoa if desired
• 1 teaspoon vanilla extract
• 2–3 tablespoons heavy cream
• 1/3 cup raspberry jam

Supplies

• Edible Halloween Decorations
• Black Narrow Trays

Instructions

1. Preheat the oven to 350°F. Spray 5 narrow baking trays with nonstick spray.
2. Prepare brownie mix according to package directions. Fill each tray halfway with batter. Bake 15–18 minutes or until set and a toothpick comes out clean. Cool completely.
3. Beat the butter until smooth. Mix in the powdered sugar, cocoa powder, vanilla, and 2 tablespoons cream until fluffy. Add an extra tablespoon of cream if needed for spreading consistency.
4. Spread a thin layer of raspberry jam on each brownie tray.
5. Pipe or spread the frosting over the jam.
6. Decorate each tray with two edible Halloween toppers for a chilling “slash n stab” look.

FAQ

Can I make these Slash n Stab Brownie Trays ahead of time?
Yes, bake the brownies and add the jam a day ahead. Frost and decorate the day of serving for the freshest look.

How do I store Halloween brownie trays?
Keep them covered in the fridge for up to 3 days. Bring to room temperature before serving for the best texture.

Can I freeze these brownies?
Yes, freeze without the decorations for up to 2 months. Thaw and decorate before serving.

What’s the best brownie mix to use?
Any brand will work, but fudgy-style mixes give the richest result for this recipe.

Are there kid-friendly decoration options?
Yes! Skip the scarier toppers and use pumpkins, candy eyeballs, or Halloween sprinkles for a fun twist.

Sprinkle of Fun

Hosting a murder mystery party? Serve these Slash n Stab Brownie Trays as part of the crime scene spread. Once the murderer is revealed, celebrate the big surprise with these killer treats and a spooky punch bowl on the side.