Key Lime Fluff Recipe – Creamy No-Bake Dessert

Key Lime Fluff is an easy-to-make dessert recipe that’s perfect to serve during the hot summer months.

This refreshing no-bake treat comes together in minutes, making it ideal for busy days when you still want something homemade and special.

It combines the tangy sweetness of key lime pie with the light, airy texture of a classic fluff dessert, creating a creamy, citrusy bite every time.

Whether you’re hosting a backyard barbecue, heading to summer parties, or simply enjoying a quiet evening at home, this cool and creamy dessert is sure to become a family favorite.

A bowl of key lime pie fluff sits on a red checkered cloth, topped with mini marshmallows, lime zest, and cookies. Text overlay reads key lime pie fluff recipe. Lime slices and greenery decorate the background.

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How to Make Key Lime Pie Fluff

Start by whisking together lime juice, lime zest, and sweetened condensed milk in a large bowl until smooth and creamy.
For the best flavor, use fresh key lime juice if possible. If you can’t find key limes, regular limes work just fine.
Gently fold in the whipped topping and mini marshmallows until well combined.
Cover and let the fluff chill for the full 2 hours (or longer) so it thickens properly and the flavors blend together. Overnight is even better.

Four images show steps for making a creamy key lime pie fluff recipe: whisking lime zest into a yellow mixture, folding in whipped topping, adding mini marshmallows, and the final pale green mix in a steel bowl. A lime and whipped topping are nearby.

Before serving, top with crushed vanilla wafers and extra lime zest.
For a fun presentation, serve this dessert dip in small cups, mason jars, or a graham cracker crust for a pie-style twist.

A bowl of creamy green dessert topped with mini marshmallows, lime zest, and two vanilla wafers sits on a red and white checkered cloth, with sliced limes and wooden spoons nearby.

Don’t Forget To…

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Can I make Key Lime Pie Fluff ahead of time?

Yes. It’s actually better when made several hours in advance so it has time to set and develop flavor.

Can I freeze Key Lime Pie Fluff?

Freezing isn’t recommended, as the texture can change once thawed. It’s best enjoyed fresh from the refrigerator.

A bowl of fluffy green salad, inspired by a key lime pie fluff recipe, is topped with tangerine and crushed nuts on a red checkered cloth, with mini marshmallows scattered around and a small potted plant in the background.

What to Serve with Key Lime Fluff Desserts

If you’re loving this sweet and creamy treat, be sure to check out these great ideas too for even more easy desserts everyone will rave about.

Pool Party Desserts are the perfect way to keep things fun, colorful, and crowd-pleasing all summer long.
Mini Key Lime Pies deliver all the bright citrus flavor you love in adorable, single-serve portions.
Oreo Fluff and Cranberry Fluff Recipes are two easy, no-bake recipes that are always a hit at parties and holiday gatherings.

A bowl of creamy key lime pie fluff recipe dessert topped with mini marshmallows, crumbled cookies, and lime zest sits on a red and white checkered cloth. Two whole vanilla cookies and a sliced lime are nearby.

OXO Good Grips Etched Zester and Grater Nellie & Joes Juice Key West Lime, 2 Pack (16 ounces)Fresh Key Limes 3 lbs.NABISCO Nilla Wafers, 850 gm Mora Ceramic Chips and Dip Serving Tray: Large Divided Party Bowl Set for Chips & Salsa, Veggies & Dip, Fruit, Snacks, Entertaining, Hosting, etc. Minimalist Design for the Modern Hostess – White

A white bowl filled with creamy key lime pie fluff dessert topped with mini marshmallows and a vanilla wafer, sitting on a red checkered cloth with more wafers and marshmallows around it; a plant is in the background.

Key Lime Pie Fluff Recipe

This Key Lime Fluff Recipe is creamy, tangy, and no-bake! The perfect easy dessert for summer parties, potlucks, and family gatherings.

Print Pin Rate

Course: desserts

Cuisine: American

Keyword: key lime fluff, key lime pie fluff

Prep Time: 10

Additional Time: 2

Total Time: 2 10

Servings:

Author: momma lew

Ingredients

¾ cup fresh lime juice
Zest of half a lime
1 14 ounce can sweetened condensed milk
1 8 ounce container whipped topping
10 ounces mini marshmallows
½ cup crushed vanilla wafers
Green food coloring optional

Instructions

In a large bowl whisk together the lime juice, lime zest and sweetened condensed milk.
Stir in the whipped topping and mini marshmallows.
Cover the bowl and refrigerate for at least 2 hours.
Before serving, sprinkle the top with crushed vanilla wafers and fresh lime zest.

Notes

Store in an airtight container in the refrigerator for up to 3 days.

Key Lime Fluff