Monster Mash Brownies – A Fun and Spooky Halloween Treat

Halloween desserts don’t have to be scary they can be fun, colorful, and playful too! Monster Mash Brownies are the perfect example: rich, fudgy brownies decorated with monster-inspired toppings like candy eyeballs, colorful frosting, and sprinkles. These treats are great for parties, kid-friendly baking sessions, or simply adding a festive touch to your Halloween dessert table.

Chocolate brownies decorated with candy eyeballs and orange candy pieces, styled as fun Halloween monster treats

Monster Mash Brownies

Chef Carol
These Monster Mash Brownies are fudgy, festive, and frightfully fun! Decorated with candy eyeballs, colorful frosting, and sprinkles, they’re the ultimate Halloween party treat for kids and adults alike.
Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Course Dessert
Cuisine American
Servings 12 brownies
Calories 280 kcal

Equipment

  • baking pan (9×13 or 8×8)
  • Mixing bowls
  • knife or cookie cutters
  • spatula or piping bags
  • Serving platter

Ingredients
  

  • 1 batch brownies (homemade or boxed, baked and cooled)
  • 1 cup frosting or candy melts, tinted with food coloring (green, purple, orange)
  • 1/2 cup candy eyeballs (small and large for variety)
  • 1/2 cup Halloween sprinkles and candies (such as M&Ms or gummy worms)
  • 1/4 cup optional extras: Oreo crumbs, licorice strips, or mini marshmallows

Instructions
 

  • Prepare your brownies in a 9×13-inch pan for larger servings or an 8×8 pan for thicker pieces. Allow them to cool completely before decorating.
  • Slice brownies into even squares or rectangles. For variety, use cookie cutters like circles or monster shapes.
  • Spread or pipe frosting on top of each brownie. Tint frosting with food coloring to create vibrant monster bases such as green, purple, or orange.
  • Press candy eyeballs onto the frosted brownies. Use sprinkles and candies to add details, and gummy worms or licorice for monster features.
  • Arrange the decorated brownies on a platter to serve with a festive monster mash vibe.

Notes

Cool brownies completely before decorating so frosting doesn’t melt. Use a variety of candy eyes for a playful look, and let kids design their own monsters for a fun party activity. Store in an airtight container for up to 3 days.
Keyword Halloween brownies, Halloween party treat, kid-friendly dessert, monster brownies

What Are Monster Mash Brownies?

Monster Mash Brownies are brownies decorated with bright colors, spooky candy, and edible monster faces. Think gooey brownies topped with neon frosting, candy eyes, gummy worms, or crushed cookies for texture. Each brownie looks different, so the batch becomes a tray of silly, creepy, and fun monsters.

Ingredients You’ll Need

  • Brownies – homemade or boxed, baked and cooled
  • Frosting or candy melts – tinted with food coloring (green, purple, orange)
  • Candy eyeballs – small and large for variety
  • Sprinkles and candies – Halloween sprinkles, M&Ms, or gummy worms
  • Optional extras – Oreo crumbs for dirt, licorice strips for monster mouths, or mini marshmallows

Step-by-Step Instructions

Step 1 – Bake the brownies
Prepare your brownies in a 9×13-inch pan for larger servings or an 8×8 pan for thicker pieces. Allow them to cool completely before decorating.

Step 2 – Cut into squares
Slice brownies into even squares or rectangles. If you want variety, use fun cookie cutters (like circles or monster shapes).

Step 3 – Add colorful frosting
Spread or pipe frosting on top of each brownie. Tint frosting with food coloring to create vibrant monster bases—green for Frankenstein, purple for spooky fun, or orange for pumpkins.

Step 4 – Decorate like monsters

  • Press candy eyeballs onto the frosted brownies (one big eye, or several small ones).
  • Use sprinkles and candies to create hair, noses, or creepy details.
  • Add gummy worms for “monster tongues” or licorice strings for silly mouths.

Step 5 – Serve with a monster mash vibe
Arrange the decorated brownies on a platter so they look like a monster party.

Creative Variations

  • Frankenstein Brownies: Green frosting base, big candy eyes, black sprinkles for hair.
  • One-Eyed Monsters: Use one giant candy eyeball for a cyclops look.
  • Zombie Brownies: Frost with gray icing and drizzle red gel for a gory effect.
  • Monster Dirt Brownies: Top with Oreo crumbs, gummy worms, and eyeballs peeking out.

Tips for Success

  • Cool brownies fully before decorating so frosting doesn’t melt.
  • Use different sizes of candy eyes for a more playful look.
  • Let kids decorate their own monsters—it’s a fun party activity.
  • Store in an airtight container for up to 3 days at room temperature.

FAQs

Can I use boxed brownie mix?

Yes, boxed mix works perfectly and saves time.

Do I need special frosting?

No, simple buttercream or store-bought frosting tinted with food coloring works great.

Can these be made ahead of time?

Yes, bake brownies a day before and decorate closer to serving time for the freshest look.

What if I don’t have candy eyes?

Make DIY eyes with white chocolate chips and mini chocolate chips.

Why They’re Perfect for Halloween

Monster Mash Brownies are playful, colorful, and customizable. They combine the richness of chocolate brownies with creative decorations that kids and adults will love. They’re also versatile—you can make them as silly or spooky as you like.

Conclusion

Monster Mash Brownies are the ultimate Halloween dessert for families, parties, and school events. With fudgy brownies as the base and endless decorating options, each brownie becomes a unique little monster. Fun to make, fun to eat, and sure to disappear from the dessert table in no time!

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