Key Lime Pie with Graham Cracker Crust

There’s something about a good Key Lime Pie that just screams sunshine and happiness to me. Maybe it’s the bright, tangy lime flavor or that smooth, creamy filling nestled into a buttery graham cracker crust. This pie feels like the perfect blend of sweet and tart, creamy and crisp. And let’s not forget the fresh whipped cream topping that adds just the right touch of airy sweetness. It’s a dessert that instantly transports me to a breezy beachside afternoon, even if I’m just enjoying it at my own kitchen table.

I’ve always had a soft spot for citrus desserts, and Key Lime Pie is definitely high on my list of favorites. The simplicity of this recipe makes it a go-to when I want something special but don’t have the energy for a complicated dessert. Pressing that graham cracker crust into place and whisking together the creamy lime filling is pure joy – simple steps that turn into something amazing. And the best part? The moment I take that first bite and feel the silky filling melt into the crumbly, buttery crust. Heaven!

This pie has quickly become a family favorite around here, especially during the warmer months. But truth be told, I’ll make it any time of year because why wait for summer to enjoy something so delicious? It’s perfect for celebrations, casual get-togethers, or just because you feel like treating yourself to something truly delightful. And that little sprinkle of lime zest on top? It’s like a tiny burst of sunshine on each slice.

Ingredients

For the Graham Cracker Crust:

• 1 ½ cups (180 g) graham cracker crumbs – The foundation of our pie, adding a classic buttery crunch.
• ⅓ cup (65 g) granulated sugar – Adds just the right amount of sweetness to the crust.
• ½ teaspoon salt – Enhances the flavor and balances the sweetness.
• 6 tablespoons (85 g) unsalted butter, melted – Holds everything together with a rich, golden finish.

For the Key Lime Filling:

• 4 large egg yolks – Creates that ultra-creamy texture you crave in every bite.
• 1 can (14 oz / 396 g) sweetened condensed milk – The essential ingredient for luscious sweetness and smoothness.
• ½ cup (120 ml) fresh key lime juice (about 12 key limes) – The star of the show, delivering that signature tangy punch.
• 1 tablespoon key lime zest (or regular lime zest) – Adds brightness and a boost of bold citrus flavor.
• ½ teaspoon vanilla extract – Rounds out the flavors with a hint of warmth and depth.
• ⅛ teaspoon salt – Just a pinch to enhance all the incredible flavors.

For the Whipped Cream Topping:

• 1 cup (240 ml) heavy whipping cream – The dreamy, fluffy topping that takes this pie to the next level.
• 2 tablespoons (15 g) powdered sugar – Adds just the right touch of sweetness without weighing down the whipped cream.
• ½ teaspoon vanilla extract – A splash of vanilla makes this topping extra irresistible.
• Key lime zest, for garnish – A fresh, zesty finish that makes each slice pop.

Recipe Instructions

You can find a printable recipe card at the bottom of this post.

1. Preheat the oven to 350°F (175°C).

2. In a bowl, mix graham cracker crumbs, sugar, salt, and melted butter until evenly combined.

3. Press the mixture firmly into the bottom and sides of a 9-inch (23 cm) pie pan.

4. Bake for 8 minutes, then let cool while preparing the filling.

5. In a large bowl, whisk the egg yolks until slightly thickened.

6. Whisk in the sweetened condensed milk, key lime juice, lime zest, vanilla extract, and salt until smooth.

7. Pour the filling into the cooled crust and smooth the top.

8. Bake at 350°F (175°C) for 12-15 minutes, until the center is just set (a slight jiggle is fine).

9. Let the pie cool at room temperature for 30 minutes, then refrigerate for at least 3 hours (or overnight) until fully set.

10. Using a hand mixer or stand mixer, beat heavy whipping cream, powdered sugar, and vanilla on medium-high speed until stiff peaks form.

11. Spread or pipe the whipped cream on top of the chilled pie.

12. Garnish with key lime zest and extra graham cracker crumbs if desired.

13. Slice, serve, and enjoy!

Tips & Tricks for the Perfect Key Lime Pie

• Use Fresh Key Lime Juice for the Best Flavor: Freshly squeezed key lime juice is the secret to achieving that signature tartness and bold lime flavor. Bottled juice can work in a pinch, but fresh is always better!
• Don’t Skip the Zest: Adding key lime zest to the filling boosts the citrus flavor even more. Just be careful not to grate too deeply into the lime, as the white pith can be bitter.

   

• Press the Crust Firmly: When making your graham cracker crust, use the bottom of a glass or measuring cup to press the mixture firmly into the pie pan. This helps create a solid, sturdy base that holds together beautifully when sliced.

• Pre-Bake the Crust: Giving your crust a quick bake before adding the filling helps it firm up and develop that perfect buttery crunch. Let it cool completely before pouring in the filling.

• Avoid Overbaking the Filling: The filling should be just set when you take it out of the oven, with a slight jiggle in the center. It will continue to firm up as it cools, so don’t worry if it looks a bit wobbly when you pull it from the oven.

• Chill Thoroughly Before Serving: For the best texture, let the pie chill in the refrigerator for at least 3 hours (or overnight). This gives the filling time to fully set and develop its creamy consistency.

• Whipped Cream Topping Tips: Beat your whipped cream until stiff peaks form, but don’t overwhip it, or it could turn grainy. Adding powdered sugar instead of granulated helps stabilize the cream for a smoother, silkier finish.

• Garnish for a Beautiful Presentation: Sprinkle fresh key lime zest over the whipped cream for a vibrant, eye-catching finish. A few thin lime slices or a light dusting of extra graham cracker crumbs also make a beautiful touch.

• Make Ahead for Ease: This pie can be made a day in advance, which is perfect if you’re entertaining. Just wait to add the whipped cream until right before serving for the freshest taste.

• Slice Cleanly: For those picture-perfect slices, use a sharp knife dipped in hot water and wiped clean between cuts.

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