These key lime pie bars are a fun and refreshing sliceable citrus dessert! They are filled with a sweet and tangy creamy lime filling baked on top of a crumbly, buttery crust.
If you’re looking for a warm-weather dessert that everyone will love, this is it! It’s easy enough for anyone to put together, slices beautifully, and easily feeds a crowd at gatherings or picnics.
You can find almost endless classic key lime pie variations out there, but this bar version is very simple and straightforward. It doesn’t include the hassle of traditional pie slicing, and there’s no messy serving required once they firm up in the fridge.
These bars are all about showcasing fresh, vibrant lime juice with a smooth, rich center and a crisp base (for an easy, perfectly balanced cool treat).
Ingredients in Key Lime Pie Bars
A handful of simple ingredients come together to create the sweet and tangy layers that make these bars so enjoyable.
How to Make Key Lime Pie Bars
This recipe builds two simple layers before chilling the dessert until perfectly set.
1. Prepare the baking pan
Line a square baking pan with parchment paper. Leave extra paper hanging over the edges so the bars lift out easily after chilling.
2. Make the graham crust
Place graham cracker crumbs, sugar, and melted butter in a bowl. Stir until the crumbs look evenly coated and slightly damp.
3. Press the crust into the pan
Pour the crumb mixture into the prepared pan and press it firmly across the bottom. Use the back of a spoon or measuring cup to create an even layer.
4. Bake the crust
Place the pan in the oven and bake the crust briefly. This step helps the butter bind the crumbs together and creates a sturdy base for the filling.
5. Prepare the lime filling
In a mixing bowl whisk together sweetened condensed milk, egg yolks, key lime juice, lime zest, vanilla extract, and a pinch of salt. Stir until the mixture becomes smooth and slightly thick.
6. Pour filling over the crust
Remove the crust from the oven and allow it to cool slightly. Pour the lime filling evenly across the surface of the crust.
7. Bake the bars
Return the pan to the oven and bake until the filling sets. The center should look slightly firm while still creamy.
8. Cool the bars
Remove the pan from the oven and allow it to cool at room temperature. Cooling slowly helps the filling firm up properly.
9. Chill in the refrigerator
Place the cooled pan in the refrigerator and chill for several hours. This step allows the filling to fully set and makes slicing easier.
10. Slice and serve
Lift the chilled dessert out of the pan using the parchment paper. Cut into even squares and top with whipped cream if desired.
How to Serve Key Lime Pie Bars
Chilled bars taste best straight from the refrigerator. The cool temperature helps the filling stay smooth and refreshing while the crust remains firm.
A small swirl of whipped cream on top adds a light creamy touch that balances the bright lime flavor. Some people enjoy adding a sprinkle of lime zest for extra citrus aroma.
These bars work beautifully for summer gatherings, family dinners, or simple afternoon desserts. Each square stays neat and easy to serve without needing plates and forks.
Another enjoyable way to present them includes arranging the bars on a serving platter with fresh lime slices nearby. The bright green color adds a cheerful look to the dessert table.
Recipe Tips
- Use freshly squeezed key lime juice for the brightest flavor. Bottled juice may taste slightly dull in comparison.
- Press the graham crust firmly into the pan so it holds together once the bars are sliced.
- Allow the crust to cool slightly before adding the filling. This helps the layers stay separate and neat.
- Whisk the filling ingredients until completely smooth to prevent lumps in the final texture.
- Do not overbake the bars. The filling should appear set but still slightly soft when removed from the oven.
- Refrigerate the dessert for several hours before slicing so the bars hold their shape.
- Use a sharp knife wiped clean between cuts for smooth square slices.
Key Lime Pie Bars
Course: DessertCuisine: AmericanDifficulty: Easy9
bars19
minutes25
minutesIngredients
1½ cups graham cracker crumbs
⅓ cup sugar
6 tablespoons melted butter
1 can sweetened condensed milk
3 egg yolks
½ cup key lime juice
1 tablespoon lime zest
1 teaspoon vanilla extract
Pinch of salt
Whipped cream for serving
Directions
- Prepare the baking pan:
Line a square baking pan with parchment paper. Leave extra paper hanging over the edges so the bars lift out easily after chilling. - Make the graham crust:
Place graham cracker crumbs, sugar, and melted butter in a bowl. Stir until the crumbs look evenly coated and slightly damp. - Press the crust into the pan:
Pour the crumb mixture into the prepared pan and press it firmly across the bottom. Use the back of a spoon or measuring cup to create an even layer. - Bake the crust:
Place the pan in the oven and bake the crust briefly. This step helps the butter bind the crumbs together and creates a sturdy base for the filling. - Prepare the lime filling:
In a mixing bowl whisk together sweetened condensed milk, egg yolks, key lime juice, lime zest, vanilla extract, and a pinch of salt. Stir until the mixture becomes smooth and slightly thick. - Pour filling over the crust:
Remove the crust from the oven and allow it to cool slightly. Pour the lime filling evenly across the surface of the crust. - Bake the bars:
Return the pan to the oven and bake until the filling sets. The center should look slightly firm while still creamy. - Cool the bars:
Remove the pan from the oven and allow it to cool at room temperature. Cooling slowly helps the filling firm up properly. - Chill in the refrigerator:
Place the cooled pan in the refrigerator and chill for several hours. This step allows the filling to fully set and makes slicing easier. - Slice and serve:
Lift the chilled dessert out of the pan using the parchment paper. Cut into even squares and top with whipped cream if desired.
