Why You’ll Love This Recipe

This dessert is the best of both worlds: a twist on classic key lime pie with a fun lasagna-style layering. The crust is crunchy and nutty, the cheesecake layer is rich and creamy, and the key lime custard layer provides the perfect amount of tartness. Topped with whipped cream and nuts, it’s a refreshing, indulgent treat that’s perfect for sharing.

Ingredients

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

For the 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)

For the Cheesecake Layer:

6 oz cream cheese, softened
2/3 cup powdered sugar
2/3 cup whipped topping
1/2 teaspoon vanilla extract

For the Key Lime Layer:

2 tablespoons cornstarch
3/4 cup key lime juice
3/4 cup sugar
4 egg yolks, slightly beaten
5 tablespoons butter
Green food coloring (optional)
1 1/2 cups whipped topping

For the Topping:

1 cup whipped topping
1/3 cup chopped nuts (optional, for garnish)

Directions

1. Make 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 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.

2. Make the Cheesecake Layer:

In a mixing bowl, beat the cream cheese and powdered sugar until smooth and creamy.
Fold in 1 cup of whipped topping and vanilla extract, then spread the mixture evenly over the cooled crust.
Place the dish in the fridge to set while you make the key lime layer.

3. Make the Key Lime Layer:

In a medium saucepan, whisk together the sugar and cornstarch. Stir in the key lime juice and slightly beaten egg yolks.
Add the butter and bring the mixture to a gentle simmer over medium-low heat, stirring constantly until it thickens enough to coat the back of a spoon.
Remove from heat, cover with plastic wrap, and refrigerate for at least 2 hours to allow it to cool completely.
Once the custard is cooled, stir in a few drops of green food coloring (optional), then fold in 1 1/2 cups of whipped topping. Spread the key lime mixture over the cheesecake layer.

4. Add the Topping:

Spread 1 cup of whipped topping over the key lime layer.
Sprinkle chopped nuts on top, if desired.

5. Chill and Serve:

Refrigerate the dessert for at least 4-5 hours, or preferably overnight, to allow the layers to set.
You can also freeze it and serve it as a frozen dessert. It will defrost quickly and maintain its creamy texture.

Servings and Timing

Servings: 9 servings
Prep Time: 25 minutes
Cook Time: 20 minutes
Total Time: 7 hours (including cooling and refrigeration)

Variations

Frozen Version: Freeze the pie lasagna for a cold, refreshing summer treat.
Graham Cracker Crust: Substitute the macadamia nuts with crushed graham crackers for a more traditional crust.
Coconut Twist: Add shredded coconut to the crust or sprinkle on top for a tropical touch.
Vegan Version: Substitute dairy ingredients with plant-based cream cheese, whipped topping, and butter for a vegan dessert.

Storage/Reheating

Store leftovers in the refrigerator for up to 5 days. If you freeze it, allow it to thaw in the fridge for about 30 minutes before serving.

FAQs

Can I use regular lime juice instead of key lime juice?

While fresh key lime juice is ideal for the authentic flavor, regular lime juice can be used as a substitute if key limes are not available.

How can I make the crust gluten-free?

You can use a gluten-free flour blend and gluten-free nuts (or just use more nuts for the crust) to make the recipe gluten-free.

How do I make the dessert ahead of time?

This is the perfect make-ahead dessert! Prepare it the day before, and it will be ready to serve after a night of chilling.

Can I make this dessert without the food coloring?

Yes, the food coloring is optional, but it does add a nice visual touch to the key lime layer.

Can I use a different nut for the crust?

Yes! Feel free to use pecans, cashews, or almonds in place of macadamia nuts.

Conclusion

Key Lime Pie Lasagna is a fun, creative twist on the classic key lime pie. With its creamy layers, bright lime flavor, and crisp topping, it’s the perfect summer dessert for any gathering. Easy to make, refreshing, and indulgent, this dessert is sure to become a favorite. Enjoy!