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These easy Halloween brownies start with a box mix and get topped with fudgy homemade chocolate frosting and a big pile of Halloween candy. They’re perfect for bake sales, classroom parties, or using up leftover trick-or-treat candy.

I love Halloween, and these brownies are about as extra as it gets. Extra chocolate, extra candy, extra fun. They start with a box mix to keep things simple, then my mama’s famous fudgy frosting goes on top, and THEN they get decorated with whatever candy you have on hand.
These are a great way to use up leftover candy from Trick-or-Treating, but they’re also so fun for a Fall or Halloween themed party!
These are the PERFECT thing to take to the next bake sale…what kid would see these on the table and let their parent pass it by? 😉
The star, in my opinion, is really the frosting. It’s my fav frosting that my mom used to spread on her brownies when I was growing up. It’s so fudgy and decadent and actually kinda fun to make.
3 Reasons You’ll Love This Recipe:
🎉 Perfect for a crowd. Great for bake sales, classroom parties, or any Halloween gathering.
🍫 Starts with a box mix. No need for homemade brownies here. The candy topping does all the work.
🍬 Uses up leftover candy. Any Halloween candy works, so it’s a great way to clear out the bowl after trick-or-treating.
Ingredient Notes, Swaps, & Tips:

No time for homemade frosting? Use a can of chocolate frosting instead. Remove the foil cover and microwave for about 30 seconds until pourable.
Use whatever Halloween candy you have on hand. KitKats, mini Reese’s, Milk Duds, candy corn, and candy eyes all work well.
A plastic knife makes cleaner cuts through the set frosting and candy.
Want a homemade brownie base instead of a box mix? My homemade brownie recipe works great here too. It’s honestly my favorite.
Step by Step:
Bake the brownies: Prepare a box mix as directed and let it cool completely.

Make the frosting: Bring the sugar, butter, and milk to a boil in a saucepan and let it boil for exactly 1 minute. Remove from heat and whisk in the chocolate chips until smooth.

Frost and decorate: Pour the frosting over the brownies and arrange the candy on top before the frosting sets.

Let it set: Let the frosting firm up for about 1 hour before slicing.
Helpful Tip!
Use a plastic knife to cut perfect brownies. The Halloween brownies won’t stick to the plastic knife and you’ll get nice, smooth edges.

❔ FAQs:
Yes, keep the Halloween brownies stored in an airtight container at room temperature and they’ll last for 3-5 days.
Be sure to use a brownie mix meant for a 9×13 pan. They’re often labeled ‘family size.’
Test about 1 to 2 inches from the edge of the pan rather than dead center. Testing in the center can leave the edges overdone by the time a tester comes out clean there.

Halloween Brownies
Ingredients
- 1 box brownie mix prepared as directed on box
- 1 cup granulated sugar
- 6 tablespoons butter
- 6 tablespoons milk
- 1/2 cup semi-sweet chocolate chips
- Halloween candy for decorating
Instructions
- Bake the brownies as directed and let cool completely.
- Add the sugar, butter, and milk to a small sauce pan over medium heat and whisk often until fully melted.
- Let the butter mixture boil for exactly 1 minute.
- Immediately remove from the heat and whisk in the chocolate chips until melted and smooth.
- Pour the chocolate frosting over the brownies.
- Arrange the Halloween candy over the frosting as desired.
- Let the frosting set for 1 hour before slicing and serving.
Tips & Notes:
Nutrition Information:












Stacy says
I gate Halloween , but do take my kid to safe places to trick or treat. And he loves the candy. Will make this weekend.
Stacy says
Hate not gate.
Shareba says
AH! Your brownies are so cute! I love the little eyeballs on there. And I totally hear you about eating the Halloween chocolate… I have to buy mine at the last minute, or there won’t be any for the kids!
Marsha | Marsha's Baking Addiction says
I love a fun and easy recipe, especially when it involves brownies and candy! These look SO good!
Lisa Jo Abbo says
I sent the Nanny nd kids to get some fall and harvest decorations last week. My mom was coming up this weekend. I know I specifically said “harvest decorations”! I came home from work and saw a blood red window cling in the front window that read “Help me!!!”Tombstones, spider webs, plastic eye balls, witches hats and brooms were bought, but no fall harvest decorations. So, yes – we’re all decorated for Halloween. Otherwise, I feared some 911 calls if I left the help me sign in the front window all alone! Can’t wait to make these yummy treat on Friday with the kids!
Karly says
Haha! Sounds like the kids had a good time shopping! 🙂
Starr says
Your brownies look like so much fun! I especially love those googly eyes peeking out. So cute!
Charlotte @ What Charlotte Baked says
Those Halloween photos of your kids on the wall are amazing! And the brownies too, of course. I love how you snuck some little eyes in there with the candy too. You’ve got me in a Halloween mood ?
Karly says
Thank you!!
Christina says
First of all, I LOVE how you have zombie portraits of your kids. Any parent who hands down their love of Halloween to their kids is winning at parenting in my book. And the brownies look soooooo cute!!! I love the little eyeballs, hahaha! I can’t wait to share this with my sister for her kids 🙂
Karly says
Thanks, Christina!
parth rathod says
The brownie looks amazing, i would like to cook it for my kids,
thank you for sharing
Erin @ The Spiffy Cookie says
Ha! I love that you even added spooky little eyes among all the candy on top.
Marie says
Love your Halloween decor especially the pictures on the wall! We don’t decorate that much inside the house, but we always carve a pumpkin or two. Anyway, this is a fantastic idea! It looks delicious!
Gini Hernandez says
These brownies look Fabulous! Are related somehow? Each year my oldest daughter and I try to hold off on decorating. This year we will be gleefully flinging bats, ghosts and spiderwebs everywhere in our individual homes…she even has a Halloween Spookytown! Your ‘ghoulish Picture ‘ wall is so great! You are an inspiration in many, many ways.
I actually don’t really trust people who do Not decorate for Halloween, (and eat chocolate) it’s a wonderful time of year!
Decorate On!
Karly says
Yay! Have fun with the bats and spiderwebs! Love this time of year. 🙂
Josie Burt says
hey Karly Cambell I love the recipes that you put on there.