Key Lime Pie Marshmallows
As an amazon associate I earn from qualifying purchases.
These no-bake dessert treats are just bursting with bright citrus flavor! Just like your favorite summer slice of key lime pie, in marshmallow form!
Oh my word you guys! Please don't burst my bubble and tell me this has been done before because I am beaming with pride right now!
Please give a warm welcome to the newest member of the Baking a Moment family:
Key Lime Pie Marshmallows!
Dude. These are seriously insane. The flavor is like a punch in the mouth (but in a good way)! And they were a snap to make. Seriously! I whipped 'em up in between washing the dinner dishes and taking the kiddos up for their bath. Like, 15 minutes, I'm telling ya!
But I was actually not so sure if my key lime idea was going to work, so I only made a half batch. I used my nifty loaf pan, which I am in love with, because of the square corners. Long story short, it worked beautifully, so I could have totally followed Martha's recipe and had twice as many marshmallows. If you want a double batch, you'll use a 9x9 pan 😉
I used bottled key lime juice so I could get that true key lime flavor, +fresh lime zest. But if you can get your hands on fresh key limes you should totally go for it! They are even more tart and flavorful than the regular kind.
At first, I was thinking of dusting them all in graham cracker crumbs to emphasize the key lime pie point. But then, I had some leftover toasted coconut laying around so I thought why not? And, as long as I'm making more than one kind, I may as well do a few with just powdered sugar, because you know my five-year old ain't touchin' no marshmallow with brown stuff on it.
#ridiculouslypickyeater
The flavor in these marshmallows will knock your socks off. They are just BURSTING with pucker-y citrus flavor! Such a fun summery treat!
Be sure to spritz a little non-stick spray on your knife before cutting them into squares; they're super sticky! I used this kind of knife, which is sometimes called a bench knife, but is aka a dough scraper. It's great for bars of all kinds, and it gets a ton of use around my kitchen!
They're awesome just by themselves, but stay tuned for a fun twist on a classic, coming later this week!
PS- Are we following each other on Instagram? I'm an Instagram noob, quickly becoming an Instagram addict! Follow me for a behind the scenes look at Baking a Moment!
As an amazon associate I earn from qualifying purchases.
Ingredients
- ⅓ cup (78.86 ml) key lime juice
- ½ ounce (14.17 g) plain gelatin, (2 envelopes)
- 1 ½ cups (300 g) granulated sugar
- ⅔ cup (157.73 ml) light corn syrup
- ⅓ cup (78.86 ml) water
- ⅛ teaspoon kosher salt
- 1 teaspoon vanilla extract
- ¼ cup (24 g) lime zest, (zest of 2 limes)
- ½ cup (42 g) graham cracker crumbs,, toasted coconut, or powdered sugar
Instructions
- Lightly mist a loaf pan with non-stick spray, and line with parchment.
- Place the key lime juice in a large mixing bowl, and sprinkle the powdered gelatin on top. Set aside and allow to soften.
- Combine the sugar, corn syrup, water, and salt in a medium saucepan, and set over medium-high heat. Allow the mixture to come to a boil, swirling the pot occasionally (do not stir). Attach a candy thermometer to the side of the pot, and keep the mixture at a low boil until it reaches 238 degrees F.
- Slowly and carefully pour the hot syrup over the key lime/gelatin mixture, while whipping at medium speed.
- Increase the speed to high and continue to whip until the marshmallow is stiff, glossy, and white.
- Stir in the vanilla extract and lime zest.
- Pour into the prepared pan and allow to set for 3 hours, or overnight.
- Turn the marshmallow out onto a cutting board, peel away the parchment, and use a sharp knife (misted with non-stick spray) to cut into 2-inch squares.
- Toss the marshmallows in graham cracker crumbs, toasted coconut, or powdered sugar, and enjoy!
Hi! Just discovered your blog and I'm excited to explore!!!!! I found you because I was looking for a key lime marshmallow recipe and I chose to make yours. In the past, I have had delicious key lime marshmallows and I'm happy to say that your recipe did not disappoint! IT WAS FREAKING AMAZING!!!!! I doubled the recipe (if I'm doing one then I might as well do two!) and put in two drops of mint green food coloring. Although next time I would line with parchment and spray then sift, I then dipped the top part in melted white chocolate then in graham cracker crumbs. To die for!!!!!! THANKS!
Sounds amazing! I'm so happy you enjoyed!
I don’t normally post comments on recipes, especially ones that are from 4 years ago...but I had to say OMG THESE ARE FANTASTIC!
These Are the third marshmallow recipe ive tried, and they are simply amazing. Even my friends that don’t like marshmallows are gobbling these up. I plan on using this recipe as a base for every marshmallow from here on out. It’s just so good.
How long do you think they’d stay edible in an airtight container? I want to mail them to family for the holidays.
Thanks so much!
That's so great to hear Ashley! I'm so glad everyone likes them. I think they'd probably be good for a few days at least. Good luck!
Made these super lime-y treats today and they turned out delicious! We had fresh key limes from a neighbor's tree and the mallows were thus bursting with flavor. One fatal flaw to the recipe though: "Lightly mist a loaf pan with non-stick spray, and line with parchment." If you don't also spray or treat the parchment in some way, your marshmallows will stick like holy hell and be nearly impossible to remove. Sadly, I learned this the hard way! 🙂 Still, a very tasty mallow recipe and a fun use for key limes!
So sorry you had difficulty! I think maybe the parchment I use is silicone treated to be non-stick. Thank you for bringing this up though for future readers. I'm so happy you enjoyed the taste though!
Super delicious and totally worth the bit of sticky frustration 🙂 Tx again for sharing this yummy recipe!
Sounds yummy. I have a Idea. I used to make a sweet tart lemon cookie, soft, but flavor similar to the boxed ones but better but instead of plain powdered sugar I would add a tad of citric acid to the sugar and roll cookie in it before and after baking. Bet that would be cool on these. If you enjoy the sweet tart candies and the stuff in the straws (remember that--I am dating myself) you will love this.
That's a really fun idea, Tammy! I bet my kids would love that, they're all over those sour candies. Thanks for sharing!
These sound very summery and fresh, I love the puckeryness that citrus imparts. I'm going to try and make some marshmallows soon for another themed month I've got coming up, wish me luck!!
Good luck Laura! But honestly you won't even need it. They're a snap! You're gonna nail it 😉
Such an amazing treat! Thanks for linking up with What's Cookin' Wednesday!
Thank you for hosting! So happy to see you here at Baking a Moment 😉
Oh, these look amazing, Allie! I have seen key lime marshmallows at the grocery store, but these look so much better than those! You could make some seriously fun s'mores with those. 🙂
Haha, I always think the same thing when I come up with a genius idea. I dread googling it, just because it always turns out that someone else has done it and blogged about it before! Anyhow, hi! Howdy! I found your blog through Mary Frances's and I'm pretty sure we should be BFF, because I'm a dessert addict too. Can't wait to see what new desserts you have in store. 🙂
Thanks, Elizabeth! I'm so glad you popped over! I'll be checking out your blog too- we dessert addicts need to stick together 😉
key lime is a great flavor for marshmallow--yum!
Oh definitely! I loved how the tart lime cut the sugary-sweetness. Thanks, Dina! xo
Whoa. Just whoa. I've never tried marshmallows (always too scared! 😉 ) but now I have no choice! The fluffy texture is the perfect compliment to the snappy lime juice. Ooh, a little zesty, a little sweet ... I think you just reinvented marshmallows! Pinned!
Thank you so much, Mary Frances! And your description is perfect! I wish I had thought to describe them that way 😉
Allie, this is such a creative idea! I've always loved the flavor of Key Lime Pie, but sometimes I don't love the custardy texture. But I always love homemade marshmallows. I cannot WAIT to try these. They seem like the best of both worlds! And those ones with toasted coconut??? They look especially heavenly!
Thanks so much Jamie! The coconut ones were my favorite too 😉
Allie these are such a good idea! I love the texture of marshmallows...divinely light, fluffy and simply sweet 🙂 Can't wait to munch on these on the patio in the sun with some juice and a good book!!
Sounds like a perfect afternoon, Tashiana! 😉
Wow, those look amazing Allie!! I wish I could find key lime juice in Iowa. I actually looked last week because I wanted to make cookies, but no such luck. Now I am going to have to resort to ordering online, because these need to be made...soon!!
Hey Lisa! I wouldn't hesitate to try these with regular lime juice. If it's not too expensive, that is, with the lime shortage and all. But really, I think it would taste every bit as delicious! Thanks so much for the sweet compliments!
I really think these are a novelty, never seen anything like it.
Dark chocolate for me though with the toasted coconut, s'more style please!!!
Pinned!! It's just that unique.
Thanks for pinning Laura! And I think they'd be fabulous with dark chocolate too 😉
These look gorgeous. I'm just drooling over your brilliant photos! I wish I could get corn syrup here 🙁 I need to make these.
I hope you're able to find a source, Miss Messy! These were so much fun to make and I bet you could add all sorts of flavors too. Good luck!
What a lovely summery treat. I would love to try dipping these in white chocolate. I like this marshmallow recipe. It looks easier than most.
It was a snap, Laura! I'm so happy you liked it, and you know what? That is a stinkin' brilliant idea. 😀 😀 😀