Popcorn Cake with Marshmallows

The smell of butter melting into marshmallows still takes me back to my daughter's sixth birthday party, when we needed something wildly fun and fast. I'd seen popcorn cakes in old community cookbooks but never attempted one until the morning of the celebration, frantically popping kernels while the kids ran through the house. When that first glorious, colorful slice came out of the Bundt pan, I knew we'd started a family tradition.

Last Christmas, my sister showed up with three different bags of discontinued candy she'd been hoarding, demanding we turn them into popcorn cake. We ended up with this neon masterpiece that tasted like childhood and looked like a party explosion. My dad, who claims he doesn't have a sweet tooth, ate three pieces standing at the counter.

Ingredients

• 12 cups plain popped popcorn: Freshly popped works best, and please pick out those sneaky unpopped kernels nobody wants to bite into
• 1/2 cup unsalted butter: Salted butter throws off the perfect sweet-salty balance we're aiming for
• 1 (10-oz/285 g) bag mini marshmallows: Mini marshmallows melt faster and more evenly than the big ones
• 1 cup candy-coated chocolate pieces: These bring pops of color and pockets of chocolate throughout every bite
• 1 cup mini pretzels, broken: The pretzels add this incredible salty crunch that cuts through all that sweetness
• 1/2 cup roasted, salted peanuts (optional): Honestly, these make it taste like the world's most addictive snack mix

Instructions

Get your pan ready:

Grease a 10-inch Bundt pan or tube pan thoroughly with butter or nonstick spray, getting into every crevice

Prep your popcorn:

Pile 12 cups of popped popcorn into your largest mixing bowl and carefully pick out any unpopped kernels

Melt the gooey stuff:

In a saucepan over medium heat, melt the butter then add marshmallows, stirring constantly until completely smooth

Coat everything:

Pour that melted marshmallow mixture over the popcorn and mix quickly with buttered hands or a spatula until evenly coated

Add the fun stuff:

Gently fold in the candy-coated chocolates, broken pretzels, and peanuts if you're using them, saving a few candies for the top

Press it in:

Firmly press the mixture into your prepared pan, smoothing the top and pressing down really well

Let it set:

Let the cake cool at room temperature for about 1 hour until it holds its shape

Serve it up:

Invert onto a plate, slice into wedges, and watch people's faces light up

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My neighbor's kids started calling me the popcorn cake lady after I made these for every block party last summer. There's something magical about watching someone's expression when they realize this colorful slice is actually crispy, chewy popcorn transformed into cake form.

Make It Your Own

The beauty of this recipe is how endlessly customizable it is. I've made versions with crushed Oreos, dried cranberries and white chocolate for winter, and even peanut butter chips swapped in for the candies. My niece insists on adding rainbow sprinkles to the marshmallow mixture for maximum birthday energy.

Serving Suggestions

While this is perfectly delicious on its own, a drizzle of melted white or dark chocolate over the cooled cake takes it over the top. I've also served it alongside vanilla ice cream for a popcorn-cake-ala-mode situation that had people questioning everything they thought they knew about dessert.

Storage and Make-Ahead Tips

The cake stays surprisingly fresh in an airtight container for up to three days, though it rarely lasts that long in my house. You can also press it into the pan, cover it tightly with plastic, and let it set overnight before serving the next day.

• Wrap individual slices in plastic for easy lunchbox treats
• If the cake gets a bit stale, pop slices in the microwave for 10 seconds
• Freeze whole slices between wax paper for up to a month

Save Pin

Every time I make this, I'm reminded that the best desserts don't have to be complicated or fussy to bring people together. Sometimes you just need popcorn, marshmallows, and a little bit of colorful magic.

Recipe FAQs

→ Can I make popcorn cake ahead of time?

Absolutely! This dessert stores beautifully in an airtight container for up to 3 days at room temperature. The marshmallow coating keeps everything fresh and chewy. It's actually perfect for preparing the day before a party or celebration.

→ What other candies work well in this mix?

The possibilities are endless! Try gummy bears, jellybeans, Reese's pieces, crushed Oreos, or seasonal candy corn. For a sophisticated version, mix in dark chocolate chunks and toasted nuts. Avoid anything too hard that might make slicing difficult.

→ Why use a Bundt pan instead of a regular cake pan?

The Bundt pan's tube center helps the dessert set evenly and creates an attractive presentation. The ring shape also makes serving easier—you can pre-slice wedges before guests arrive. If you don't have one, a 9x13 inch rectangular pan works perfectly too.

→ How do I prevent the mixture from sticking to my hands?

Butter is your best friend here! Lightly coat your hands with butter or nonstick spray before pressing the mixture into the pan. You can also use the back of a buttered spatula to smooth the top. For extra insurance, dip your hands in cold water occasionally while working.

→ Can I use microwave popcorn instead of air-popped?

Yes, but choose plain or lightly salted varieties without heavy butter flavoring. Movie theater butter versions can make the final dessert too greasy. Shake out any unpopped kernels before mixing with the marshmallow coating.

→ What's the best way to slice this dessert?

Use a sharp knife sprayed with nonstick cooking spray. For cleanest cuts, wipe the knife clean between slices. You can also run the knife under hot water and dry it before cutting—the heat helps slice through the marshmallow smoothly.