Key Lime Pie Bars are a fun twist on the classic pie with a zesty lime filling over a buttery crust. They’re sweet, tart, and super easy to share with friends!
These bars are perfect for summer gatherings or just a cozy night in. I think they taste even better chilled, making them a refreshing treat. Who could resist a slice (or two)? 🍰
Key Ingredients & Substitutions
Graham Cracker Crumbs: They provide a crunchy, sweet base. If you’re out of graham crackers, crushed digestive biscuits or vanilla wafer cookies work great as alternatives.
Sweetened Condensed Milk: This is key for the pie’s creamy texture. You can use evaporated milk combined with sugar if you want a lighter version, but it may alter the richness of the flavor.
Key Lime Juice: Freshly squeezed key lime juice is ideal for that wonderful tang. If unavailable, you can use regular lime juice, but keep in mind it alters the flavor a bit.
Sour Cream: Adds creaminess and a slight tang to the filling. Greek yogurt can be a great substitute, offering a similar texture with a bit more protein.
Heavy Whipping Cream: For the topping, this gives you that fluffy texture. If you’re looking for a lighter option, you can use coconut cream for a dairy-free version!
How Do I Make Sure My Filling is Smooth and Creamy?
Achieving a smooth filling is all about proper mixing. Start by combining your sweetened condensed milk and sour cream before adding the other ingredients. This ensures they blend well together.
- Whisk the egg yolks separately before adding them to the mixture. This helps incorporate air and makes the filling lighter.
- When you add the key lime juice and zest, do it gradually while continuously whisking. This prevents curdling and keeps everything silky.
After mixing, avoid over-beating, which can introduce too much air. Just mix until everything is combined and smooth for the best results!
How to Make Key Lime Pie Bars?
Ingredients You’ll Need:
For The Crust:
- 1 1/2 cups graham cracker crumbs
- 1/3 cup granulated sugar
- 1/2 cup unsalted butter, melted
For The Filling:
- 1 (14 oz) can sweetened condensed milk
- 1/2 cup sour cream
- 3/4 cup key lime juice (freshly squeezed is best)
- Zest of 2 limes
- 3 large egg yolks
For The Topping:
- 1 cup heavy whipping cream
- 2 tablespoons powdered sugar
- Zest of 1 lime (for garnish)
How Much Time Will You Need?
This recipe requires about 15 minutes for preparation and an additional 30-35 minutes for baking, plus at least 2 hours to chill in the refrigerator. So in total, set aside around 2 hours and 50 minutes to make these delicious Key Lime Pie Bars!
Step-by-Step Instructions:
1. Prepare the Crust:
Start by preheating your oven to 350°F (175°C). In a medium bowl, mix together the graham cracker crumbs, granulated sugar, and melted butter. Stir until the crumbs are fully coated with the butter. Next, press this mixture firmly into the bottom of a greased 8×8 inch baking dish to form the crust. Bake in your preheated oven for 8-10 minutes or until it’s golden brown. Once done, take it out and let it cool.
2. Make the Filling:
In a large mixing bowl, combine the sweetened condensed milk, sour cream, key lime juice, lime zest, and egg yolks. Whisk everything together until the mixture is nice and smooth. This will be your delicious lime filling!
3. Bake the Bars:
Pour the lime filling over your cooled crust, spreading it evenly. Put it back in the oven and bake for an additional 15-20 minutes, or until the filling is set and slightly firm to the touch. Once it’s done, take it out and let it cool to room temperature. After it’s cooled, pop it in the fridge for at least 2 hours to chill completely.
4. Prepare the Topping:
While your bars are chilling, it’s time to make the topping! In a chilled bowl, beat the heavy whipping cream and powdered sugar together until you achieve stiff peaks. This means when you lift the beaters, the cream holds its shape nicely!
5. Serve and Enjoy:
After the bars have chilled, cut them into squares. Top each square with a dollop of whipped cream and a sprinkle of lime zest for that final touch. Now, enjoy your delicious Key Lime Pie Bars!
Can I Use Regular Limes Instead of Key Limes?
Yes, you can absolutely use regular limes if key limes aren’t available. The flavor may be slightly different, but it will still be delicious. Just keep in mind that regular limes can be a bit more tart, so adjust the sugar in the filling if you prefer it sweeter!
How Should I Store Leftover Key Lime Pie Bars?
Store any leftovers in an airtight container in the refrigerator for up to 4 days. If you plan to keep them longer, you can freeze them for up to 2 months. Just make sure to wrap them well to prevent freezer burn!
Can I Make the Crust Without Graham Crackers?
Absolutely! If you don’t have graham crackers, you can substitute with crushed digestive biscuits, vanilla wafers, or even crushed oatmeal cookies. Just make sure to adjust the sugar content slightly depending on the sweetness of the alternative you choose!
Is It Necessary to Chill the Pie Bars Before Serving?
Yes, chilling the pie bars helps the filling set properly and intensifies the flavors. It’s best to refrigerate them for at least 2 hours after baking before cutting and serving for the best texture and taste.
