If you adore the tangy brightness of traditional key lime pie but crave a new twist, then this Key Lime Pie Lasagna Recipe is your new best friend in the kitchen. It layers all those irresistible flavors you love into a luscious, no-bake dessert that beautifully balances tartness with sweet, creamy indulgence. With a buttery nutty crust, a smooth cream cheese layer, and a zesty key lime custard topped with whipped topping, this dish is a showstopper that’ll have everyone asking for seconds. It’s perfect for warm-weather gatherings, special occasions, or just a treat to brighten your day.

Ingredients You’ll Need
These ingredients are simple but play crucial roles in creating the perfect texture and flavor profile of this Key Lime Pie Lasagna Recipe. Each one brings a unique element that, when combined, turns into a dessert that is light, creamy, tart, and irresistibly nutty.
- Flour: Forms the base of the crust to provide a sturdy yet tender foundation.
- Sugar: Adds sweetness to balance the tart key lime juice throughout the layers.
- Butter, melted: Brings richness and helps bind the crust ingredients together.
- Macadamia nuts, finely chopped: Impart a subtle, buttery crunch to the crust, but cashews or pecans work just as well.
- Cream cheese, softened: Creates a smooth, tangy cheesecake layer that’s creamy and dreamy.
- Powdered sugar: Blends effortlessly into the cream cheese for a silky texture.
- Whipped topping: Lightens the cheesecake and key lime layers, giving the dessert a fluffy mouthfeel.
- Vanilla extract: Adds a warm, aromatic note that complements the tart lime.
- Cornstarch: Thickens the key lime custard to the ideal consistency.
- Key lime juice: The star ingredient that delivers the signature citrus zing.
- Egg yolks, slightly beaten: Enrich the custard and help it set perfectly.
- Butter: Enriches and smooths the key lime mixture.
- Green food coloring (optional): Adds a fun, vibrant hue but is purely aesthetic.
- Chopped nuts (optional, for garnish): Provide an extra crunch and nutty finish to the top layer.
How to Make Key Lime Pie Lasagna Recipe
Step 1: Prepare and Bake the Crust
Start by preheating your oven to 350°F (175°C) and greasing a 9×9-inch baking dish. Combine the flour, sugar, melted butter, and finely chopped macadamia nuts in a bowl until the mixture looks crumbly but can hold together when pressed. Press this mixture firmly into the bottom of your dish to form an even crust. Bake for 20 minutes until it’s golden and fragrant, then set it aside to cool completely. This crust is the nutty, buttery base that supports all those luscious layers on top.
Step 2: Make the Cream Cheese Layer
While the crust is cooling, whip up the cheesecake layer. Beat the softened cream cheese with powdered sugar until it’s perfectly smooth and velvety. Gently fold in 1 cup of whipped topping and the vanilla extract to lighten the mix and add that subtle depth of flavor. Spread this luscious layer evenly over the cooled crust and pop it into the fridge. It needs to chill and firm up while you prepare the tangy key lime custard.
Step 3: Cook the Key Lime Custard
In a medium saucepan, whisk together sugar and cornstarch. Stir in the key lime juice and the slightly beaten egg yolks until combined. Add butter and place the pan over medium-low heat, stirring constantly to prevent lumps. Keep going until the mixture thickens enough to coat the back of a spoon — that’s the perfect custard consistency. Once thickened, remove from heat, cover with plastic wrap (directly on the surface to avoid a skin forming), and refrigerate for at least 2 hours to cool completely. When it’s ready, stir in a few drops of green food coloring if you like, and fold in 1 1/2 cups of whipped topping to make it light and airy. Then, spread this key lime layer gently over the chilled cream cheese layer.
Step 4: Add the Whipped Topping and Garnish
Spread 1 cup of whipped topping evenly over the key lime custard layer to create a soft and creamy top coat. If you enjoy a bit of crunch, sprinkle chopped nuts on top to add texture and a stunning finish. This simple step brings texture contrast that makes every bite fascinating.
Step 5: Chill and Set the Layers
Refrigerate the entire lasagna for at least 4 to 5 hours, or even better, overnight. This resting time allows all those beautiful layers to set firmly and the flavors to meld deliciously. You can also freeze the dish as a frozen dessert option. When ready to enjoy, just let it defrost briefly—it will retain its creamy texture and vibrant flavor without losing any of its charm.
How to Serve Key Lime Pie Lasagna Recipe

Garnishes
To elevate your Key Lime Pie Lasagna Recipe presentation, consider topping each slice with a dollop of fresh whipped cream and a thin lime wedge or zest. Chopped nuts scattered on top add a delightful crunch and hint at the nutty crust beneath. A few mint leaves can also bring a refreshing green pop and complement the tropical vibes beautifully.
Side Dishes
This dessert shines on its own but pairs wonderfully with simple accompaniments like fresh berries or a vibrant berry coulis. A cup of strong coffee or a light citrus-based cocktail will also balance the richness and bring out the tartness of the key lime layers.
Creative Ways to Present
Try serving the Key Lime Pie Lasagna Recipe in clear glass parfait cups for an individual dessert presentation that shows off the distinct layers. Alternatively, use a trifle bowl for an impressive centerpiece dessert that guests can scoop into—each method highlights the dazzling layers in their own special way.
Make Ahead and Storage
Storing Leftovers
After you’ve enjoyed your slices, store any leftovers in an airtight container in the refrigerator. The creamy, chilled layers hold up beautifully for 3 to 4 days, making this a great make-ahead treat for busy days or unexpected guests.
Freezing
You can freeze the Key Lime Pie Lasagna Recipe if you want to prepare it well in advance or save some for later. Wrap the dish tightly with plastic wrap and foil to prevent freezer burn. When you’re ready, thaw it overnight in the refrigerator to preserve the velvety texture and bright flavors.
Reheating
This dessert is best served chilled or slightly thawed from frozen, so reheating isn’t necessary. Just allow it to sit at room temperature for 15 to 20 minutes if coming out of the fridge, or follow thawing instructions if frozen, and it’s ready to enjoy.
FAQs
Can I make this recipe without nuts?
Absolutely! Nuts add great texture and flavor, but if you have allergies or prefer nut-free, simply omit them from the crust and garnish. You can increase the flour slightly or add some crushed graham crackers to keep the crust firm and flavorful.
Is fresh key lime juice necessary, or can I use bottled?
Fresh key lime juice gives the best authentic flavor with vibrant tartness, but bottled juice works fine if fresh isn’t available. Just make sure it’s pure juice without added sugars or preservatives for the best results.
How long does it take for the layers to set properly?
Chilling the layers for at least 4 to 5 hours is important, but overnight chilling ensures they firm up perfectly and all those delicious flavors marry wonderfully.
Can I prepare this dessert a day before serving?
Yes! In fact, making the Key Lime Pie Lasagna Recipe a day ahead of your event lets the flavors develop better and saves time on the day you want to impress your guests.
What if I don’t have green food coloring?
The food coloring is totally optional and only adds a fun tint! If you don’t have any, just skip it—the pie will still taste amazing, with its natural pale yellow-green custard color.
Final Thoughts
This Key Lime Pie Lasagna Recipe is a delightful escape into a world of layered flavors and textures that never fail to impress. It’s fresh, creamy, and just the right amount of tangy—perfect for sharing with friends and family. I can’t wait for you to try this recipe and add it to your favorites; it’s sure to become a go-to dessert that brightens any occasion!
Print
Key Lime Pie Lasagna Recipe
- Prep Time: 25 minutes
- Cook Time: 20 minutes
- Total Time: 7 hours 45 minutes (including chilling time)
- Yield: 9 servings
- Category: Dessert
- Method: Baking
- Cuisine: American
Description
This Key Lime Pie Lasagna is a luscious layered dessert combining a buttery nutty crust, creamy cheesecake filling, and tangy key lime custard topped with fluffy whipped topping and crunchy nuts. It’s chilled to set, resulting in a refreshing, no-bake style treat perfect for warm days or special occasions.
Ingredients
Crust
- 1 cup flour
- 2 tablespoons sugar
- 1/2 cup butter, melted
- 1/2 cup macadamia nuts, finely chopped (or substitute with cashews or pecans)
Cheesecake Layer
- 6 oz cream cheese, softened
- 2/3 cup powdered sugar
- 1 cup whipped topping
- 1/2 teaspoon vanilla extract
Key Lime Layer
- 3/4 cup key lime juice
- 3/4 cup sugar
- 2 tablespoons cornstarch
- 4 egg yolks, slightly beaten
- 5 tablespoons butter
- Green food coloring (optional)
- 1 1/2 cups whipped topping
Topping
- 1 cup whipped topping
- 1/3 cup chopped nuts (optional, for garnish)
Instructions
- Prepare the crust: Preheat the oven to 350°F (175°C) and spray the bottom of a 9×9-inch baking dish. In a bowl, combine the flour, sugar, melted butter, and finely chopped nuts. Stir until the mixture is well combined and crumbly. Press the mixture firmly into the bottom of the baking dish to form the crust. Bake for 20 minutes, then remove from the oven and allow to cool completely.
- Make the cheesecake layer: In a mixing bowl, beat the softened cream cheese and powdered sugar together until smooth and creamy. Gently fold in 1 cup of whipped topping and the vanilla extract. Spread this mixture evenly over the cooled crust. Place the dish in the refrigerator to set while preparing the key lime layer.
- Prepare the key lime custard: In a medium saucepan, whisk together the sugar and cornstarch. Stir in the key lime juice and the slightly beaten egg yolks. Add the butter and cook over medium-low heat, stirring constantly, until the mixture gently simmers and thickens enough to coat the back of a spoon. Remove from heat, cover with plastic wrap directly on the surface to prevent a skin, and refrigerate for at least 2 hours until completely cooled. Once chilled, optionally stir in a few drops of green food coloring, then fold in 1 1/2 cups of whipped topping. Spread this key lime mixture evenly over the cheesecake layer.
- Add the final topping: Spread 1 cup of whipped topping evenly over the key lime layer. Sprinkle chopped nuts on top if desired for added texture and decoration.
- Chill to set: Refrigerate the entire dessert for at least 4-5 hours or preferably overnight to allow the layers to fully set and flavors to meld. For an alternate serving style, the dessert can also be frozen and served as a frozen treat, with defrosting before serving to maintain its creamy texture.
Notes
- Finely chopping the nuts ensures a better crust texture.
- Using key lime juice provides an authentic tart flavor; regular lime juice can be substituted but will alter the taste slightly.
- Green food coloring is optional and only for visual effect.
- Ensure the custard is fully cooled before folding in whipped topping to maintain a light texture.
- This dessert can be made a day ahead, making it ideal for entertaining.
- Freezing the dessert offers a refreshing summer treat, but allow to thaw slightly before serving for best texture.

