Skip to Content

Frankenstein Brownies That Electrify Any Party

Frankenstein Brownies That Electrify Any Party

Ready to jolt your dessert table back to life? These Frankenstein Brownies are the Halloween treat that’ll have your guests shrieking with delight. Fudgy, chocolatey, and just the right amount of creepy-cute, they’re the edible equivalent of yelling “It’s alive!”—but with frosting. Between the marshmallow bolts, licorice locks, and candy eyes that follow you across the room, these brownies are a scream at classroom parties, bake sales, or spooky movie marathons.

Frankenstein Brownies That’ll Shock Your Sweet Tooth

Why You’ll Love These Brownies

These aren’t your run-of-the-mill chocolate squares. They’re edible monsters with personality—and a whole lot of frosting.

  • Kid-tested, goblin-approved: Let the little monsters decorate their own creations.
  • Customizable chaos: Switch up the candy, colors, or expressions for a whole cast of characters.
  • Make-ahead magic: Bake the base a day early and unleash your inner mad scientist later.
  • Party MVP: Whether it’s a haunted house bash or a themed birthday, these brownies steal the spotlight.

Ingredients

  • 1 pkg (18.4 oz) milk chocolate brownie mix
  • 2/3 cup oil
  • 2 eggs
  • 1/4 cup water
  • 1/2 cup white chocolate chips
  • 1/2 cup chopped raisins
  • 1 container (16 oz) vanilla frosting
  • Green concentrated food coloring
  • Red concentrated food coloring
  • Black soft licorice
  • 3 marshmallows (or make your own )
  • 2 M&M candies
  • 1 tube (4.25 oz) black decorating icing with writing tip
  • Red licorice lace

How to Make Frankenstein Brownies

Bake the Base

  1. Preheat oven to 350°F. Line a 13″x9″ pan with foil, leaving a 2-inch overhang. Spray generously.
  2. Mix brownie batter with oil, eggs, and water per package instructions.
  3. Stir in white chocolate chips and chopped raisins.
  4. Spread evenly in pan and bake 25–30 minutes, or until a toothpick comes out clean.
  5. Cool in pan for 20 minutes, then lift out using foil and cool completely.
Helpful Tip: Raisin-phobic? Soak chopped raisins in the water for 15 minutes, strain, and use the infused liquid in your batter. You’ll get the flavor without the chew.

Frost Like a Mad Scientist

  1. Flip the cooled brownie onto a platter and ditch the foil.
  2. Tint frosting green—go bold or go home.
  3. Pipe ¼ cup into a pastry bag and snip the tip.
  4. Slather the rest over the brownie like you’re icing a monster’s mug.

Decorate Your Creature

  • Hair: Black licorice = wild scientist locks.
  • Eyes: Halve a marshmallow, stick on M&Ms with frosting, and dot with black icing.
  • Nose: Pipe a frosting blob—Frankenstein’s got character.
  • Ears: Marshmallows on the sides, covered in frosting.
  • Bolts: Flatten black licorice halves and stick to the sides.
  • Mouth: Red licorice lace for a grin, grimace, or ghoulish smirk.
  • Final Touch: Mix red food coloring with a drop of water and brush lightly over the eyes for that haunted glow.

Makes 24 servings—unless your monsters are extra hungry.

Expert Tips

  • Chill before slicing for clean edges that don’t look like a horror show.
  • Short on time? Candy eyeballs and colored gels are your shortcut to spooky.
  • Traveling? Wait to add bolts and laces until you arrive—Frankenstein doesn’t travel well with accessories.

Variations & Twists

  • Mini Monsters: Cut into bite-sized squares and decorate individually.
  • Mummy Madness: Swap green frosting for white and pipe on bandages.
  • Zombie Vibes: Add black food coloring for a darker, undead look.
  • Candy Remix: Ditch the raisins for mini chocolate chips or chopped caramels.

Serving Suggestions

Build a Halloween dessert board with these brownies front and center. Pair with:

  • Spiced Applesauce Cake
  • Vanilla Cinnamon Baked Apples
  • Hot cocoa or pumpkin punch for a cozy, creepy vibe

Want more fall favorites? Try or to round out your spread.

FAQs

Can I make these ahead of time? Yes! Bake up to two days early, store covered, and frost when ready to serve.

How do I store leftovers? Room temp in an airtight container for 3 days, or refrigerate for up to 5.

Can I freeze them? Absolutely—freeze unfrosted brownies for up to 2 months. Thaw before decorating.

What if I hate raisins? Skip them or use the infused water trick for flavor without the chew.

More Brownie Mischief

Looking for more Halloween-themed Recipes?

A Halloween-themed Pinterest collage featuring spooky cocktails, creepy desserts, and savory bites. Includes images of green slime drinks, graveyard pudding cups, mummy hot dogs, Frankenstein Rice Krispies Treats, and blood-red martinis. Central overlay reads “Halloween Recipes: Spooky Treats, Creepy Eats & Ghoulish Sips” with cobwebs and a spider on a dark background.

Final Thoughts

These Frankenstein Brownies are more than dessert—they’re a delicious science experiment gone right. With gooey centers, green frosting, and candy features that’ll make your guests giggle, they’re the kind of treat that turns a party into a monster mash. So grab your spatula and summon your inner mad baker—it’s time to bring dessert to life.

Frankenstein-themed Halloween brownie with green frosting, candy eyes, black licorice hair, and red licorice mouth, set against a spooky dark background with fog-like texture.
Yield: 24 servings

Frankenstein Brownies That Electrify Any Party

Prep Time: 15 minutes
Cook Time: 30 minutes
Additional Time: 20 minutes
Total Time: 1 hour 5 minutes

hese Frankenstein Brownies are the ultimate Halloween dessert—fudgy, festive, and frightfully fun to decorate. With green frosting, candy eyes, and licorice bolts, they’re perfect for Halloween parties, classroom treats, or spooky movie nights. Easy to make, kid-friendly, and totally customizable, this Halloween brownie recipe is a monster hit. Try pairing them with Caramel Fondue or Apple Pie Bars for a full-on fall dessert board.

Ingredients

  • 1 pkg (18.4 oz) milk chocolate brownie mix
  • 2/3 cup oil
  • 2 eggs
  • 1/4 cup water
  • 1/2 cup white chocolate chips
  • 1/2 cup chopped raisins
  • 1 container (16 oz) vanilla frosting
  • Green concentrated food coloring
  • Red concentrated food coloring
  • Black soft licorice
  • 3 marshmallows (or make your own homemade marshmallows)
  • 2 M&M candies
  • 1 tube (4.25 oz) black decorating icing with writing tip
  • Red licorice lace

Instructions

  1. Preheat oven to 350°F. Line a 13"x9" pan with foil, leaving a 2-inch overhang. Spray with cooking spray.
  2. Prepare brownie mix with oil, eggs, and water per package instructions.
  3. Stir in white chocolate chips and chopped raisins.
  4. Spread evenly in pan and bake 25–30 minutes, or until a toothpick comes out clean.
  5. Cool in pan for 20 minutes, then lift out using foil and cool completely.
  6. Flip brownie onto a platter and remove foil.
  7. Tint frosting green and spread evenly over brownie.

Decorate:

  • Hair: Arrange black licorice strips.
  • Eyes: Halve marshmallows, attach M&Ms with frosting, and dot pupils with black icing.
  • Nose: Pipe a small mound of frosting.
  • Ears: Press marshmallows on sides and cover with frosting.
  • Bolts: Flatten black licorice and attach to sides.
  • Mouth: Shape red licorice lace into a grin.
  • Final Touch: Brush red food coloring around eyes for eerie glow.

Notes

  • For a smoother raisin flavor, soak chopped raisins in the water for 15 minutes, strain, and use the infused liquid in your batter.
  • Chill brownies before slicing for cleaner edges.
  • Traveling with treats? Add bolts and laces after arrival.
  • Want more Halloween inspiration? Check out Zombie Eyeball Punch or Vampire Twilight Cocktail for spooky sips.
  • Nutrition Information:

    Yield:

    24

    Serving Size:

    1

    Amount Per Serving: Calories: 216Total Fat: 13gSaturated Fat: 3gTrans Fat: 0gUnsaturated Fat: 10gCholesterol: 18mgSodium: 62mgCarbohydrates: 25gFiber: 0gSugar: 21gProtein: 1g

    The Nutritional Information may not be accurate. This website provides approximate nutrition information for convenience and as a courtesy only. Nutrition data is gathered primarily from the USDA Food Composition Database, whenever available, or otherwise other online calculators.

    Did you make this recipe?

    Please leave a comment on the blog or share a photo on Instagram

     

    About Julee Morrison

    Julee Morrison is an author and writer with over 35 years of experience in parenting and family recipes. She’s the author of four cookbooks: The Instant Pot College Cookbook, The How-To Cookbook for Teens, The Complete Cookbook for Teens, and The Complete College Cookbook.Available on Amazon,

    Her work has appeared in The LA Times, Disney’s Family Fun Magazine, Bon Appétit, Weight Watchers Magazine, All You, Scholastic Parent & Child, and more.

    Her article "My Toddler Stood on Elvis' Grave and Scaled Over Boulders to Get to a Dinosaur" appeared on AP News, and her parenting piece “The Sly Way I Cured My Child's Lying Habit” was featured on PopSugar.

    Outside of writing, Julee enjoys baking, reading, collecting crystals, and spending time with her family. You can find more of her work at Mommy’s Memorandum.

    Skip to Recipe