Halloween is just around the corner, and that means it’s time to start thinking about spooky treats! This year, why not surprise your friends and family with these Frankenstein Brownies? They’re a fun and festive dessert that everyone will love. My kids always request these every October.
These Frankenstein Brownies are not only delicious but also incredibly easy to make. With just a few simple ingredients and a little bit of creativity, you can transform ordinary brownies into monstrous masterpieces. So gather your ingredients, put on your favorite Halloween playlist, and let’s get baking!
Why You’ll Love It
These Frankenstein Brownies are more than just a spooky treat; they’re a delicious and easy-to-make dessert that’s perfect for any Halloween celebration. The fudgy brownie base combined with the sweet green frosting and fun decorations makes for a delightful combination of flavors and textures. They’re easy enough for even beginner bakers to make, but the fun design makes them special. Plus, they’re always a hit with kids and adults alike!
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Frankenstein Brownies
- Total Time: 35 mins
- Yield: 12 brownies
Description
Get ready for Halloween with these monstrously delicious Frankenstein Brownies! These easy-to-make treats combine a fudgy brownie base with vibrant green frosting, candy eyes, and chocolate chip bolts. Perfect for spooky celebrations or any occasion where you want a fun and tasty dessert!
Ingredients
- One box of your favorite brownie mix (plus the ingredients called for on the box)
- 1/2 cup of vibrant green frosting
- Candy eyes
- Chocolate chips (mini or regular)
- Black gel icing (optional)
Instructions
- Prepare the brownie mix according to the package directions.
- Pour the batter into a greased baking pan and bake as directed on the brownie mix box.
- Let the brownies cool completely in the pan before frosting.
- Frost the entire top surface with the green frosting.
- Add two candy eyes to each brownie, chocolate chips for bolts, and draw on a mouth and hair with black gel icing (optional).
- Cut the brownies into squares and serve.
Notes
For best results, use good quality brownie mix and frosting. Consider adding nuts or chocolate chunks to the batter for added texture. If using black gel icing, practice your Frankenstein face design on a piece of parchment paper first. Store leftover brownies in an airtight container at room temperature for up to 3 days.
- Prep Time: 15 mins
- Cook Time: 20 mins
- Category: Dessert
- Method: Baking
- Cuisine: American
Ingredient Lowdown

Here’s what you’ll need to create these monstrously delicious treats:
- One box of your favorite brownie mix (plus the ingredients called for on the box)
- 1/2 cup of vibrant green frosting
- Candy eyes (the spookier, the better!)
- Chocolate chips (mini or regular) for Frankenstein’s bolts
- Black gel icing (optional, for adding extra details)
Don’t be afraid to experiment with different types of brownie mix to find your favorite. You can also use homemade frosting if you’re feeling ambitious. Make sure you have all the necessary equipment, like measuring tools and a whisk. Also, confirm you have the right size pan to avoid an overflow of brownie batter.
Step-by-Step Instructions
Step 1: Prepare the brownies
Start by preparing your brownie mix according to the package directions. This typically involves combining the brownie mix with eggs, oil, and water. Don’t overmix!
Step 2: Bake the brownies
Pour the batter into a greased baking pan and bake as directed on the brownie mix box. When a toothpick is inserted and comes out with a few moist crumbs, it’s done!
Step 3: Let the brownies cool
Once the brownies are baked, let them cool completely in the pan before frosting. This will prevent the frosting from melting and ensure that your Frankenstein faces stay intact.
Step 4: Frost the brownies
Once the brownies are cool, frost the entire top surface with the green frosting, spreading it evenly with a spatula or knife.
Step 5: Create the Frankenstein faces
Now for the fun part – decorating! Add two candy eyes to each brownie to create Frankenstein’s eyes. Use chocolate chips to make his signature bolts on either side of his neck. If you’re using black gel icing, draw on a simple mouth and some hair.
Step 6: Serve
Once decorated, cut the brownies into squares and serve your spooky Frankenstein Brownies! Enjoy these creepy confections!
Better-Than-Grandma Tips

- For extra fudgy brownies, slightly underbake them. Check for doneness by inserting a toothpick into the center. It should come out with a few moist crumbs attached.
- If you’re short on time, use store-bought frosting. But if you want to go the extra mile, try our delicious chocolate ganache frosting.
- Make sure the brownies are completely cool before frosting them. Otherwise, the frosting will melt and become a gooey mess.
- Get creative with the decorations! You can add sprinkles, other candies, or even draw designs with the black gel icing.
Flavor Twists
Want to experiment with different flavors? Try adding a swirl of peanut butter to the brownie batter before baking. You can also use different colored frosting to create other spooky characters. Why not try purple for a witch or orange for a pumpkin? If you’re feeling adventurous, consider baking your brownies from scratch using our recipe for chewy brownies. The possibilities are endless!
How long do Frankenstein Brownies stay fresh?
These brownies are best enjoyed within 2-3 days of baking. Store them in an airtight container at room temperature to maintain their freshness.
Can I make these brownies ahead of time?
Yes, you can bake these brownies ahead of time. Bake and frost them a day or two in advance, then add the candy eyes and chocolate chip bolts just before serving.
Can I use different colored frosting?
Feel free to use any color frosting you like. Purple, orange, or even black frosting could be used to create different monster looks.
Can I use different decorations?
Absolutely! Get creative with the decorations. Use sprinkles, different colored candies, or other edible decorations to make your Frankenstein Brownies unique.
How to Serve

These Frankenstein Brownies are delightful on their own, but you can make them even more special with a few simple additions. Serve them with a scoop of vanilla ice cream or a dollop of whipped cream for an extra touch of sweetness. You can also serve them with a glass of cold milk or our delicious Korean iced tea. They also make wonderful additions to lunchboxes or spooky picnics. No matter how you serve them, these Frankenstein Brownies are sure to be a hit!
That’s a Wrap
These Frankenstein Brownies are sure to be a hit this Halloween! They’re easy to make, and the fun design makes them a memorable treat for all ages. They’re the perfect combination of spooky and sweet, and I know you’ll love them. For more ghoulishly delightful desserts, check out our Desserts category. Don’t forget to share your spooky creations with me on Pinterest, Facebook, and Instagram. Happy baking!