If you’re craving a dessert that’s bright, creamy, and downright irresistible, then this Key Lime Pie Recipe for a Guilty-Pleasure, Ultimate Slice Recipe is exactly what you need in your life. Imagine a buttery, crunchy graham cracker crust cradling a tangy yet sweet, silky filling that melts in your mouth with every bite. This pie brings together the perfect balance of zesty key lime flavor and indulgent creaminess that feels like a little slice of sunshine and bliss. It’s a classic dessert turned ultimate guilty pleasure that will quickly become your go-to treat for any occasion.

Ingredients You’ll Need
Creating this Key Lime Pie Recipe for a Guilty-Pleasure, Ultimate Slice Recipe is surprisingly simple thanks to a handful of straightforward ingredients. Each one plays a crucial role: the crust offers texture, the filling delivers flavor and creaminess, and the garnishes provide that finishing touch of freshness and flair.
- 1 1/2 cups (150 g) graham cracker crumbs: The foundation, giving the crust its signature crunch and sweetness.
- 1/4 cup (50 g) granulated sugar: Adds just enough sweetness and helps hold the crust together.
- 1/2 cup (113 g) unsalted butter, melted: Binds the crust crumbs into a buttery, crisp base.
- Pinch of fine salt: Enhances all the sweet and tart flavors in the pie.
- 1 can (14 oz / 396 g) sweetened condensed milk: The secret to that luscious, silky filling texture.
- 4 large egg yolks: Crucial for setting the filling into a smooth custard-like consistency.
- 1/2 cup (120 ml) key lime juice: For that signature tangy zing; fresh is best for maximum brightness.
- 1 tablespoon key lime zest (or regular lime zest): Intensifies the citrus flavor with an aromatic punch.
- 1 cup (240 ml) cold heavy cream: To whip into a fluffy, slightly sweet topping.
- 2 tablespoons (15 g) powdered sugar: Sweetens the whipped cream without any grittiness.
- 1/2 teaspoon vanilla extract: Balances the tartness with a subtle warm note.
- Extra lime zest or thin lime slices: For garnish—adds a fresh, bright finish.
How to Make Key Lime Pie Recipe for a Guilty-Pleasure, Ultimate Slice Recipe
Step 1: Prepare the Crust
Start by preheating your oven to 350°F (175°C). In a mixing bowl, combine the graham cracker crumbs, granulated sugar, and a pinch of salt. Pour in the melted butter and stir until all crumbs are evenly coated and clump together when pressed. Press this mixture firmly into the bottom and up the sides of a 9-inch pie dish to create a compact, even crust. Bake it for about 10 minutes until it’s golden and set. This base will give you that crisp, buttery texture that perfectly contrasts the creamy filling.
Step 2: Whisk the Filling
While the crust cools, it’s time to mix the pie filling. In a bowl, whisk together the sweetened condensed milk, egg yolks, key lime juice, and lime zest. The acidity from the lime juice will slightly thicken the mixture as it reacts with the milk, teasing your palate with those vibrant citrus notes. Make sure everything is smooth and well combined for that flawless, silky texture.
Step 3: Bake the Pie
Pour the filling into the warm crust and smooth the top with a spatula. Bake again at 350°F (175°C) for about 15-20 minutes, or until the filling is just set but still slightly jiggly in the center. The baking gently firms up the custard while keeping it rich and creamy. Once baked, let the pie cool on the counter for an hour before heading into the fridge.
Step 4: Chill for the Ultimate Silky Slice
The chilling process is what turns this recipe into a guilty-pleasure, ultimate slice. Cover the pie lightly with plastic wrap and refrigerate for at least 4 hours or overnight. This step ensures the filling firms up properly, making it easy to cut clean, beautiful slices with that coveted smooth texture and perfect balance of tart and sweet.
Step 5: Whip the Cream Topping
Right before serving, whip the cold heavy cream with powdered sugar and vanilla extract until stiff peaks form. This light and fluffy topping adds an elegant creaminess that softens the key lime’s zing and provides a luscious counterpoint to the tart filling.
Step 6: Assemble and Garnish
Spread or pipe the whipped cream over the chilled pie with a spatula or piping bag for pretty peaks. Sprinkle additional lime zest or arrange thin lime slices on top for a fresh burst of color and a hint of extra tang. This final touch makes the pie an absolute stunner both in taste and appearance.
Step 7: Slice and Serve
Use a sharp knife dipped in warm water for cleaner cuts. Slice carefully into 10 generous wedges and serve chilled. Each slice delivers that perfect harmony of buttery crust, creamy tangy filling, and airy whipped cream—utterly addictive and deeply satisfying.
How to Serve Key Lime Pie Recipe for a Guilty-Pleasure, Ultimate Slice Recipe
Garnishes
Fresh lime zest and thin lime slices are simple but transformative garnishes that elevate the pie’s bright flavor and add a pop of color. You can also sprinkle some crushed graham crackers around the edges to echo the crust texture or add a few mint leaves for a refreshing note.
Side Dishes
This pie pairs beautifully with a tall glass of iced tea or a crisp white wine like Sauvignon Blanc. For a crunchy contrast, serve alongside candied nuts or coconut macaroons. The goal is to complement the creamy, tart pie with light and complementary flavors that enhance the overall experience.
Creative Ways to Present
For a party, consider serving individual slices in mini mason jars layered with whipped cream and crumbled graham crackers for a cute, portable treat. Or turn the pie into a parfait by layering the filling, whipped cream, and crust crumbs for a fun twist. Presentation is a great way to impress without extra fuss.
Make Ahead and Storage
Storing Leftovers
Cover leftover pie tightly with plastic wrap or store in an airtight container and keep refrigerated. It stays fresh for up to 3 days and retains its creamy texture beautifully, so you can enjoy that guilty pleasure slice whenever a craving strikes.
Freezing
Key lime pie can be frozen, but the texture will change slightly upon thawing. Wrap the whole pie well in plastic and foil before freezing. When ready to eat, thaw it overnight in the fridge and then whip fresh cream topping to restore that perfect finish.
Reheating
This pie is best served chilled, so reheating is not recommended. If you prefer a softer slice, let it sit at room temperature for about 15-20 minutes before serving to soften slightly without losing that cooling, refreshing essence.
FAQs
Can I use regular lime juice instead of key lime juice?
Absolutely! While key limes offer a distinct tartness, regular lime juice is a fine substitute and still gives a deliciously tangy flavor. Just use the same amount for best results.
Do I have to bake the filling?
Yes, baking helps the egg yolks set the filling into a silky custard texture that slices beautifully. Without baking, the pie would be too runny and less stable.
How do I get clean slices when serving?
Dip your knife in hot water and wipe it clean between cuts. This simple trick prevents the filling from sticking and keeps slice edges neat and sharp.
Can I make this recipe dairy-free?
It’s a bit tricky since sweetened condensed milk and heavy cream are essential for the authentic texture, but you can experiment with coconut condensed milk and coconut cream for a dairy-free version—just expect a slightly different flavor and texture.
What’s the best way to zest limes?
Use a microplane grater to zest the outer green skin only, avoiding the white pith underneath which is bitter. Fresh zest packs the most flavor so don’t skip it.
Final Thoughts
This Key Lime Pie Recipe for a Guilty-Pleasure, Ultimate Slice Recipe is truly a treasure for anyone who loves that perfect marriage of sweet and tart in a creamy dessert. Its simple ingredients and straightforward steps make it approachable, while the luscious flavor and silky texture guarantee you’ll want to make it again and again. So go ahead, indulge yourself—grab those limes and treat yourself to the ultimate slice of happiness!
Print
Key Lime Pie Recipe for a Guilty-Pleasure, Ultimate Slice Recipe
- Prep Time: 20 minutes
- Cook Time: 25 minutes
- Total Time: 3 hours 45 minutes (including chilling time)
- Yield: 10 slices
- Category: Dessert
- Method: Baking
- Cuisine: American
Description
This Key Lime Pie recipe delivers the ultimate slice of creamy, tangy, and luscious pie that’s perfect for a guilty pleasure dessert. With a crunchy graham cracker crust, a silky smooth filling made from key lime juice, sweetened condensed milk, and egg yolks, topped with a light whipped cream, this classic southern treat is simple to make and sure to impress.
Ingredients
Crust
- 1 1/2 cups (150 g) graham cracker crumbs (about 10–12 full sheets, crushed)
- 1/4 cup (50 g) granulated sugar
- 1/2 cup (113 g) unsalted butter, melted
- Pinch of fine salt (optional)
Filling
- 1 can (14 oz / 396 g) sweetened condensed milk
- 4 large egg yolks
- 1/2 cup (120 ml) key lime juice (fresh preferred, bottled works)
- 1 tablespoon key lime zest (or regular lime zest)
Topping
- 1 cup (240 ml) cold heavy cream
- 2 tablespoons (15 g) powdered sugar
- 1/2 teaspoon vanilla extract
- Extra lime zest or thin lime slices for garnish
Instructions
- Prepare the crust: Preheat your oven to 350°F (175°C). In a mixing bowl, combine the graham cracker crumbs, granulated sugar, melted butter, and a pinch of salt if using. Mix thoroughly until the crumbs are evenly coated and hold together when pressed.
- Form and bake the crust: Press the graham cracker mixture firmly into the bottom and up the sides of a 9-inch pie pan to create an even layer. Bake the crust in the preheated oven for about 8 minutes until set and fragrant. Remove from the oven and allow it to cool slightly while preparing the filling.
- Make the filling: In a separate bowl, whisk the egg yolks until smooth and slightly thickened. Gradually whisk in the sweetened condensed milk until fully combined. Next, stir in the key lime juice and zest. The mixture will thicken somewhat as the citrus reacts with the milk.
- Fill and bake the pie: Pour the filling into the cooled crust, smoothing the top with a spatula. Bake the pie for 15–20 minutes, or until the filling is mostly set with just a slight jiggle in the center.
- Cool the pie: Remove the pie from the oven and allow it to cool completely at room temperature. This prevents condensation and soggy crusts before chilling.
- Chill thoroughly: Refrigerate the pie for at least 3 hours, preferably overnight. This chilling step allows the custard-like filling to fully set and develop its signature creamy texture, making the pie perfect for slicing.
- Prepare the whipped cream topping and serve: In a chilled bowl, whip the cold heavy cream with powdered sugar and vanilla extract until soft peaks form. Spread or pipe the whipped cream over the pie. Garnish with extra lime zest or thin lime slices for added zing and presentation. Slice and enjoy your ultimate key lime pie!
Notes
- Using fresh key lime juice and zest will give the best, most vibrant flavor, but bottled lime juice can be used if fresh are not available.
- Be sure to chill the pie thoroughly before serving; this is crucial for a clean slice and proper texture.
- For a gluten-free option, substitute the graham cracker crumbs with gluten-free graham crackers or crushed gluten-free cookies.
- The whipped cream topping is optional but highly recommended for balancing the tartness and adding creaminess.
- Store leftover pie in the refrigerator and consume within 3 days for optimal freshness.

