If you’re looking for a fun and unique twist on the classic key lime pie, these Fluffy Key Lime Pie Marshmallows are the perfect treat for you! Soft, airy, and packed with the bright, zesty flavor of key lime, these homemade marshmallows are coated in a graham cracker dust to bring the full key lime pie experience to life. Light and melt-in-your-mouth delicious, they are a fun way to enjoy the flavors of a beloved dessert in marshmallow form.

Why You’ll Love This Recipe

These Fluffy Key Lime Pie Marshmallows are a creative take on the iconic dessert, combining the smoothness of marshmallows with the tangy citrus kick of key lime pie. The graham cracker coating adds a nostalgic touch, making these marshmallows feel like the perfect bite-sized key lime pie. Whether you’re a fan of homemade sweets or looking for a unique treat for spring or summer gatherings, these marshmallows will impress everyone with their soft, fluffy texture and refreshing lime flavor.

Ingredients

For the marshmallows:

3 envelopes unflavored gelatin
1 cup cold water (divided)
1 1/2 cups granulated sugar
1 cup light corn syrup
1/4 tsp salt
1/2 tsp vanilla extract
1/4 cup key lime juice
1 tbsp lime zest

For coating:

1/2 cup powdered sugar
1/4 cup crushed graham crackers
1 tbsp cornstarch

(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)

Directions

Line a 9×9-inch pan with parchment paper and lightly grease it to prevent sticking.
In the bowl of a stand mixer, combine the gelatin with 1/2 cup cold water. Let it bloom for about 10 minutes.
Meanwhile, in a saucepan, combine the granulated sugar, light corn syrup, salt, and the remaining 1/2 cup water. Bring the mixture to a boil over medium-high heat, cooking until it reaches 240°F (soft-ball stage).
Once the syrup reaches 240°F, with the mixer on low, slowly pour the hot syrup into the bloomed gelatin. Gradually increase the speed to high and beat for 10-12 minutes until the mixture becomes fluffy and thick.
Add the vanilla extract, key lime juice, and lime zest to the mixture. Beat for another minute until fully incorporated.
Spread the marshmallow mixture into the prepared pan. Let it set uncovered for at least 4 hours or overnight until firm.
Once set, mix powdered sugar, crushed graham crackers, and cornstarch together in a bowl for the coating.
Dust a cutting board with the coating mixture and turn the marshmallows out of the pan. Cut them into cubes, rolling each piece to coat all sides with the graham cracker mixture.
Store the marshmallows in an airtight container at room temperature.

Servings and Timing

Servings: 36 marshmallows
Prep time: 30 minutes
Cooking time: 10 minutes
Total time: 4 hours 40 minutes (includes setting time)

Variations

Flavored Marshmallows: Experiment with other citrus flavors like lemon or orange juice instead of key lime juice to create a unique marshmallow.
Chocolate Drizzle: After coating the marshmallows, drizzle them with melted chocolate for a decadent twist on the classic.
Graham Cracker Variations: Use flavored graham crackers (like cinnamon) for a spiced-up version of this treat.

Storage/Reheating

Storage: Keep the marshmallows in an airtight container at room temperature for up to 1 week.
Reheating: These marshmallows are best enjoyed fresh. If they become a little too soft over time, you can pop them in the fridge for a short time to firm up.

FAQs

1. Can I make these marshmallows without a stand mixer?

Yes, you can use a hand mixer, but a stand mixer works best to achieve the desired fluffy consistency.

2. Can I use a different type of gelatin?

Unflavored gelatin is recommended for this recipe because it provides the right consistency. Using flavored gelatin will alter the texture and flavor.

3. Can I use fresh lime juice instead of bottled?

Yes, fresh lime juice works perfectly and will provide a fresher flavor for the marshmallows.

4. Can I use a different coating for the marshmallows?

Yes! You can coat them in toasted coconut flakes, cinnamon sugar, or even crushed nuts for a different twist.

5. How do I prevent my marshmallows from sticking together?

To prevent the marshmallows from sticking, be sure to coat them thoroughly in the powdered sugar and graham cracker mixture, and store them in a single layer in an airtight container.

6. Can I freeze these marshmallows?

Yes, marshmallows can be frozen for up to 2-3 months. Just be sure to coat them well before freezing to avoid them sticking together.

7. Can I add food coloring to the marshmallows?

Yes! You can add a few drops of food coloring to the marshmallow mixture for a fun, colorful twist.

8. Can I use honey instead of corn syrup?

While corn syrup helps to create the desired texture, honey may be used as a substitute, though it will affect the flavor and consistency slightly.

9. Can I double the recipe?

Yes, you can double the recipe and use a larger pan (like a 9×13-inch pan) if you’d like to make more marshmallows.

10. Can I make these marshmallows in different shapes?

Absolutely! You can use cookie cutters to shape the marshmallows into fun shapes before coating them in the graham cracker mixture.

Conclusion

Fluffy Key Lime Pie Marshmallows are a delightful treat that brings together the beloved flavors of key lime pie in a light, fluffy, and fun-to-eat form. With their bright citrusy kick and graham cracker coating, these marshmallows offer a nostalgic twist on a classic dessert. They’re the perfect snack for any time of year, but especially for spring and summer gatherings where their refreshing flavor will be a hit. Whether you’re a marshmallow lover or a key lime pie enthusiast, these treats will surely bring a smile to your face!

Fluffy Key Lime Pie Marshmallows

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Print Recipe

These Fluffy Key Lime Pie Marshmallows combine the tangy, zesty flavor of key lime pie with the soft, airy texture of homemade marshmallows. Coated in a graham cracker dust, these delightful treats are perfect for spring and summer gatherings. Fun to make and even more fun to eat, they offer a creative twist on a classic dessert!

Total Time: 4 hours 40 minutes (includes setting time)
Yield: 36 marshmallows

Instructions

Line a 9×9-inch pan with parchment paper and grease it lightly.
In a stand mixer, combine gelatin with 1/2 cup cold water. Let it bloom for 10 minutes.
In a saucepan, combine sugar, corn syrup, salt, and remaining water. Bring to a boil until the mixture reaches 240°F (soft-ball stage).
Slowly pour the hot syrup into the bloomed gelatin while the mixer is on low. Increase speed to high and beat for 10-12 minutes until fluffy.
Add vanilla extract, key lime juice, and lime zest. Beat for another minute.
Spread the marshmallow mixture into the prepared pan. Let it set uncovered for at least 4 hours or overnight.
For coating: mix powdered sugar, crushed graham crackers, and cornstarch. Dust a cutting board with this mixture and turn the marshmallows out of the pan. Cut into cubes, rolling each in the graham cracker mixture.
Store in an airtight container at room temperature.

Notes

Variations: Substitute lime juice with lemon or orange juice for a different citrus twist.
Storage: Keep in an airtight container at room temperature for up to 1 week, or freeze for up to 3 months.
Reheating: Best served fresh, but if they become soft, refrigerate for a while to firm up.

Author: Sophia
Prep Time: 30 minutes
Cook Time: 10 minutes
Category: Dessert
Method: No-Bake
Cuisine: American
Diet: Vegetarian