Key Lime Tart
Bright, creamy, and perfectly tangy, this Key Lime Tart is the kind of dessert that feels like sunshine on a plate. With its buttery graham cracker crust, silky citrus filling, and a cloud of whipped cream on top, it strikes that perfect balance between sweet and tart that keeps people coming back for another slice.
While the filling is very much inspired by classic Key lime pie, this version is made in a tart pan for a beautiful presentation. Those fluted edges make it feel a little extra special—perfect for holidays, spring gatherings, summer cookouts, or anytime you want a dessert that looks as good as it tastes.
And don’t worry if you don’t own a tart pan. This recipe works beautifully in a standard pie plate, too, so you can easily turn it into a traditional Key lime pie if that’s more your style.
Why you’ll love this Key Lime Tart
- Bright and refreshing – The tangy lime filling makes this dessert feel light and refreshing, especially after a rich meal.
- Beautiful presentation – Making this in a tart pan creates elegant fluted edges that dress up the dessert without much extra effort.
- Easy to make – Simple ingredients and straightforward steps make this an approachable dessert for home bakers.
- Perfect for spring and summer – This chilled citrus dessert is ideal for warm-weather gatherings, Easter, Mother’s Day, brunches, and backyard cookouts.
- Can be made as a pie, too – No tart pan? No problem. The filling works beautifully in a standard pie plate.
Pie vs. tart: what’s the difference?
This recipe was prepared in a tart pan, which gives it that lovely fluted edge and a slightly more polished presentation. The filling itself is very similar to a classic Key lime pie, so if you’d rather make it the traditional way, you absolutely can.
Key Lime Tart
Ingredients
Method
- Preheat oven to 350°F.
- In a bowl, mix graham cracker crumbs, sugar, salt, and melted butter until evenly combined.
- Press the mixture firmly into the bottom and sides of a 9-inch pie pan.
- Bake for 8 minutes, then let cool while preparing the filling.
- In a large bowl, whisk the egg yolks until slightly thickened.
- Whisk in the sweetened condensed milk, key lime juice, lime zest, vanilla extract, and salt until smooth.
- Pour the filling into the cooled crust and smooth the top.
- Bake at 350°F for 12-15 minutes, until the center is just set (a slight jiggle is fine).
- Let the pie cool at room temperature for 30 minutes, then refrigerate for at least 3 hours until fully set.
- Using a hand mixer or stand mixer, beat heavy whipping cream, powdered sugar, and vanilla on medium-high speed until stiff peaks form.
- Spread or pipe the whipped cream on top of the chilled pie.
- Garnish with key lime zest and extra graham cracker crumbs if desired.
Nutrition
Tried this recipe?
Let us know how it was!To make this as a pie instead of a tart:
- Use a 9-inch pie plate
- Press the graham cracker crust into the bottom and up the sides
- Bake according to the recipe instructions
- Because pie plates are often deeper than tart pans, you may want to press the crust a little thinner for even coverage
- Alternatively, you can use a store-bought 9-inch graham cracker crust
To make this as a tart:
- Use a 9-inch tart pan with a removable bottom
- Press crust into the bottom and fluted sides
- Chill thoroughly before removing for clean slices
Tips for making the best Key Lime Tart
- Use fresh lime juice if possible – Fresh juice gives the tart a brighter, fresher flavor than bottled.
- Chill completely before slicing – This dessert needs time to set properly for clean slices.
- Don’t overbake – If your recipe includes baking, the filling should still have a slight jiggle in the center when it comes out.
- Use a removable tart pan – It makes serving much easier and gives that bakery-style presentation.
- Garnish just before serving – Whipped cream, lime zest, or thin lime slices make a beautiful finishing touch.
- Taste for tartness – If you like a sharper citrus flavor, a little extra lime zest can brighten things up.
Variations and substitutions
- Make it as a traditional Key lime pie using a pie plate instead of a tart pan
- Top with Grand Marnier whipped cream for a grown-up twist
- Use regular limes if Key limes aren’t available
- Add toasted coconut for tropical flair
- Garnish with fresh berries
- Make mini tarts in tartlet pans for individual servings
Storage tips
Store Key Lime Tart covered in the refrigerator for up to 4 days.
If you love citrus desserts, there are plenty more sweet treats to explore on Southern Kissed. My Easy Lemon Icebox Pie is another creamy, chilled dessert with bright flavor, while Homemade Vanilla Ice Cream makes a delicious pairing if you want to serve this tart à la mode. And for chocolate lovers who insist dessert should always involve cocoa, my Chocolate Lasagna is a crowd-pleasing favorite.
Last Bite
Leave a comment below and tell me – are you team pie or team tart? If you enjoyed this bright and creamy citrus dessert, please share it with friends, save it for later, and pin it to your favorite dessert board!
