Monster Mash Halloween Brownies (Brownie Mix Hack with VIDEO!)

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This easy Halloween dessert recipe is the perfect treat to whip up for your next party because they come together quickly (thanks to our favorite recipe hack, using boxed brownie mix.) These Halloween treats are a favorite party food for kids, and they taste delicious so adults love them as well. Plus our kid-friendly recipe video shows you how to bake this brownie hack in minutes flat!

Find more Halloween party ideas in our Pick Your Poison Prosecco Bar post, or if you’re here for the brownie hacks you’ll love our Gluten-Free Thin Mint Brownies!

Halloween party brownies

You know what’s terrifying? Glancing at the clock and realizing you have under an hour to whip up a treat for that evening’s Halloween party. Don’t call Ghostbusters, I have the perfect solution– Monster Mash Brownies! These Halloween brownies use a boxed brownie mix so the hard work is already done for you. Monster Mash brownies couldn’t be easier to make and the results are as delicious as they are impressive– all thanks to a little brownie mix hack magic.

These Halloween brownies look so good and use a boxed brownie mix! Making these Monster Mash for our next Halloween party!

My kid’s eyes popped out of their heads when they saw these Halloween treats, and the best part was that the mix of candies made them super yummy too.

These Halloween brownies look so good and use a boxed brownie mix! Making these Monster Mash for our next Halloween party!

They’re a fantastic treat to whip up for Halloween parties or to feed a crowd if you have guests around Halloween! These do contain peanut butter cups so just be sure that if you serve them at parties no one has an allergy.

How to Make Monster Mash Halloween Brownies

Here’s a quick video to show the process, and detailed ingredients and directions are below.

Monster Mash Halloween Brownie Recipe

The instructions are easy. I hit up the Halloween aisle at Target and found these goodies.

These Halloween brownies look so good and use a boxed brownie mix! Making these for our next Halloween party!

Use any boxed brownie mix (this one was on sale, so it’s what I used.)

These Halloween brownies look so good and use a boxed brownie mix! Making these for our next Halloween party!

Step 1: Line your brownie pan with parchment paper to make removing them easy. Mix brownies according to the instructions on the box and fill the pan. Bake for a few minutes until you notice it about to go from liquid to solid.

Step 2: Add a few Reeses Peanut Butter cups on top and push into the mix until they are embedded. You can skip this step if nut allergies are an issue.

These Halloween brownies look so good and use a boxed brownie mix! Making these for our next Halloween party!

Step 3: Continue baking according to package directions, but take out of the oven 5 minutes early. The brownies will be almost cooked but still a teeny bit soft. Remove from the oven and carefully push the candy pieces into the top of the brownies.

These Halloween brownies look so good and use a boxed brownie mix! Making these for our next Halloween party!

These Halloween brownies look so good and use a boxed brownie mix! Making these for our next Halloween party!

Step 4: Place back in the oven and bake for 5 more minutes, keeping a careful eye so the candy doesn’t totally melt. A little melting is okay, it adds to the gooey ‘Monster Mash’ look.

These Halloween brownies look so good and use a boxed brownie mix! Making these Monster Mash for our next Halloween party!

Step 5: Remove from the oven and let cool. That’s the hardest part, WAITING!

But it’s so so soooooooo worth it.

These Halloween brownies look so good and use a boxed brownie mix! Making these Monster Mash for our next Halloween party!

Monster Mash Halloween Brownies (Brownie Mix Hack!)

This easy Halloween dessert recipe is the perfect treat to whip up for your next party because they come together quickly (thanks to our favorite recipe hack, using boxed brownie mix.)

Prep Time5 minutes
Cook Time35 minutes
Course: Dessert
Keyword: halloween brownies, halloween dessert
Author: Carrie

Ingredients

  • 1 boxed brownie mix (any type)
  • Candy of your choice

Instructions

  • Line your brownie pan with parchment paper to make removing them easy. Mix brownies according to the instructions on the box and fill the pan. Bake for a few minutes until you notice it about to go from liquid to solid.
  • Add a few Reeses Peanut Butter cups on top and push into the mix until they are embedded. You can skip this step if nut allergies are an issue.
  • Continue baking according to package directions, but take out of the oven 5 minutes early. The brownies will be almost cooked but still a teeny bit soft. Remove from the oven and carefully push the candy pieces into the top of the brownies.
  • Place back in the oven and bake for 5 more minutes, keeping a careful eye so the candy doesn’t totally melt. A little melting is okay, it adds to the gooey ‘Monster Mash’ look.
  • Remove from oven and let cool. That’s the hardest part, WAITING!

DUDE.

I love hacks so so much.

Why waste time starting from scratch when these taste just as delicious?

My new go-to Halloween party treat: CHECK.

(PS- if you like it, share it! Hover over the image to pin to Pinterest!)

Halloween party brownies

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