If you’re on the hunt for a fun, festive, and downright delicious treat this fall, let me introduce you to my favorite Halloween Brownie Pie Recipe. This isn’t your typical pie or just another brownie—it’s the best of both worlds wrapped up into one show-stopper dessert that’s as fun to look at as it is to eat. I absolutely love how the rich brownie filling pairs under a flaky crust, all dressed up with colorful Halloween M&M’s and swirls of vibrant frosting. Trust me, once you try this, it’ll be a Halloween tradition you’ll want to repeat every year!

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Why You’ll Love This Recipe

Perfect Halloween Fun: The festive M&M’s and colorful frosting swirls make it a standout dessert for any spooky gathering.
Easy Yet Impressive: Using a boxed brownie mix keeps prep simple without sacrificing flavor—perfect for busy days.
Delicious Combination: Flaky pie crust meets fudgy brownie texture, with just the right chewy-crunchy balance.
Crowd-Pleaser: My family goes crazy for this, and it always disappears fast whenever I make it.

A round chocolate pie with a shiny, cracked dark brown chocolate filling sits in a clear glass pie dish with a golden brown crust folded neatly on the edges. On top of the pie are nine evenly spaced swirls of bright yellow frosting with orange highlights, each topped with a small white dollop of cream and a single dark brown chocolate candy with a white

Ingredients You’ll Need

Each ingredient in this Halloween Brownie Pie Recipe plays a key role to achieve that perfect balance of texture, taste, and visual wow-factor. You’ll find it’s easy to pick up everything from your local grocery store—just grab a ready-to-bake pie crust and your favorite brownie mix to start.

Refrigerated pie crust: Using a pre-made crust saves time without compromising on a buttery, flaky base.
Brownie mix: I use a box mix for convenience, but you can easily swap in a homemade recipe if you like.
Halloween M&M’s: These add fun pops of color and a little crunch—plus, leftover Halloween candy works great too!
Unsalted butter: Softened butter is essential for making the frosting nice and creamy.
Table salt: Just a pinch enhances all the flavors in the frosting.
Vanilla extract: The warm vanilla flavor rounds out the sweetness beautifully.
Powdered sugar: The base for that smooth, pipeable frosting everyone loves.
Heavy whipping cream: Helps achieve that perfect frosting consistency—rich and spreadable.
Gel food color (orange and yellow): These bring the frosting to life with festive Halloween hues.

Note: You’ll find the complete list of ingredients, along with their exact measurements, in the printable recipe card at the bottom of this post.

Variations

I love how versatile this Halloween Brownie Pie Recipe is—you can easily tweak it to suit your tastes or what you have on hand. I encourage you to get creative, because the basic combo is such a great canvas for all kinds of fun mix-ins and toppings.

Homemade brownie swap: I once made this with a batch of my favorite homemade chocolate chip brownies, and it took the dessert to the next level of fudgy goodness.
Different candy mix-ins: I’ve tried Reese’s Pieces and mini peanut butter cups instead of M&M’s, and my family raved about the added peanut butter flavor.
Frosting color themes: Sometimes I mix up the orange and yellow with purple or green gel colors for different spooky vibes!
Gluten-free pie crust: For friends avoiding gluten, a gluten-free crust works perfectly with no one noticing the difference.

How to Make Halloween Brownie Pie Recipe

Step 1: Prep the Pie Crust

Start by unrolling your refrigerated pie crust and placing it gently into a 9 ½ inch deep-dish pie plate. I always crimp the edges to keep it looking neat and to help seal in the brownie filling. Pop it in the fridge for now—this helps the crust hold its shape when it hits the oven.

Step 2: Mix the Brownies and M&M’s

Prepare your brownie mix according to the box directions. Here’s a little trick I learned: stir the Halloween M&M’s in by hand at the end to avoid crushing them and keep those colorful pops throughout the pie. The M&M’s add just the right bit of crunch and sweetness that make this pie so special.

Step 3: Bake the Pie

Pour the brownie batter into the chilled pie crust. To keep your crust edges from burning, I like to cover them with foil or use a crust shield. Bake at 350°F (175°C) for about 45-50 minutes. You’ll want to check doneness by inserting a knife in the center—it should come out with a few crumbs but not wet batter. Then, set the pie on a wire rack to cool completely.

Step 4: Make the Frosting and Get Creative

Beat the softened butter, salt, and vanilla until smooth and creamy. Then gradually add powdered sugar and heavy cream, continuing to beat until the frosting is light and fluffy. Divide the frosting into three bowls: keep some white, tint some orange, and the rest yellow with gel colors. Use piping bags fitted with different tips for swirls—this makes decorating a total breeze and looks so festive.

Step 5: Frost and Garnish

Pipe yellow swirls all around the pie edge, then go over that with orange swirls, followed by white ones. To finish, place a brown Halloween M&M right on top of each swirl. This final touch always impresses guests and adds the perfect festive flair.

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Pro Tips for Making Halloween Brownie Pie Recipe

Keep M&M’s Colorful: Stir them in last and by hand to prevent losing their shape and vibrant colors.
Chill the Pie Crust: Always chill the crust before filling to avoid shrinking and sogginess.
Use the Right Piping Tips: I swear by cake tips 1M, 21, and 32 for beautiful, professional-looking frosting swirls.
Don’t Frost a Warm Pie: Make sure your brownie pie is completely cooled before decorating to avoid melting your frosting work.

How to Serve Halloween Brownie Pie Recipe

A slice of rich dark chocolate pie with a cracked top layer sits on a white plate on a white marbled surface. The pie has a light brown crust at the bottom, holding a thick, moist, and dense chocolate filling. On top, there are two swirled dollops of frosting, each with a base layer of bright yellow, a middle layer of orange, and a small white swirl on top, each crowned with a small round chocolate candy. A silver fork rests beside the slice on the plate. In the background, the rest of the pie is visible with similar frosting dollops, along with a glass bottle of milk and a small white bowl of red and orange berries. photo taken with an iphone --ar 4:5 --v 7

Garnishes

I love topping the finished pie with extra Halloween M&M’s or a sprinkle of edible glitter to add sparkle. Sometimes I toss in some mini candy pumpkins or candy corn right on the serving plate for extra holiday charm—it’s small touches like these that get everyone excited before the first bite.

Side Dishes

This pie pairs beautifully with a scoop of vanilla ice cream or a dollop of freshly whipped cream, which balances the rich brownie flavor. For adults, I like to serve it alongside a cup of strong coffee or a pumpkin spice latte for extra cozy vibes.

Creative Ways to Present

For Halloween parties, I love to serve this pie on a spooky-themed cake stand with some mini pumpkins and autumn leaves around the base. I’ve also tried cutting the pie into mini slices and serving them in clear plastic cups with a dollop of frosting on top for easy grab-and-go treats—everyone loved the convenience and cuteness!

Make Ahead and Storage

Storing Leftovers

Once decorated, I keep this Halloween Brownie Pie Refrigerated. My experience is that it stays fresh and moist for up to 4 days when covered tightly with plastic wrap or stored in an airtight container. The flavors actually seem to deepen overnight—bonus!

Freezing

While I haven’t frozen the fully decorated pie (because frosting can get a bit messy), I have frozen the baked brownie pie (without frosting) wrapped well in plastic and foil. It thawed beautifully when left overnight in the fridge and just needed a quick re-frost before serving. This is a lifesaver if you want to prep ahead of Halloween party day.

Reheating

If you want warm slices, gently heat individual portions in the microwave for 10-15 seconds. Adding a scoop of cold vanilla ice cream on top makes a perfect contrast of warm and cool flavors. Just avoid reheating the whole pie with frosting, as it can soften too much and lose its pretty swirl definition.

FAQs

Can I make this Halloween Brownie Pie Recipe without a boxed brownie mix?

Absolutely! While I often use a box mix for convenience, any favorite homemade brownie recipe will work great here. Just prepare the batter as usual, then fold in the M&M’s before pouring it into the crust.
How can I prevent the pie crust edges from burning?

Cover the edges of the pie crust with foil or a pie crust shield for the entire bake or at least halfway through. This simple step protects the crust edges from getting too dark while the brownie filling bakes fully.
What frosting tips work best for decorating this pie?

I recommend using cake tips 1M for big swirls, 21 for smaller details, and 32 for textured effects. Using different tips adds dimension and really makes your Halloween Brownie Pie Recipe look professionally finished.
Can I prepare this pie in advance?

You can bake the pie and cool it in advance, then frost it on the day you plan to serve for the freshest look. If you want to prep fully ahead, keep the decorated pie refrigerated and covered—it holds up well for several days.

Final Thoughts

I remember the first time I made this Halloween Brownie Pie Recipe—my kids’ eyes lit up with excitement, and my friends insisted I share the recipe again (and again!). It’s one of those magic desserts that’s easy, fun, and absolutely memorable. If you’re looking for a way to wow your loved ones this season, give it a try—I promise you’ll love how it turns out, and it might just become your go-to Halloween dessert for years to come.