These Key Lime Pie Bars are a tasty twist on the classic pie! With a zesty lime filling on a buttery crust, they’re perfect for a refreshing treat.
They’re easy to cut into squares, making them great for sharing (or not!). I love how their tangy goodness brightens up any gathering—just watch them disappear! 😄
Key Ingredients & Substitutions
Graham Cracker Crumbs: These are essential for a classic pie crust. If you don’t have them, crushed digestive biscuits or vanilla wafer cookies can work as great substitutes!
Sweetened Condensed Milk: This ingredient gives the filling its creamy texture. If you’re looking for a lighter option, try using coconut cream or a homemade version with milk and sugar cooked down.
Key Lime Juice: Freshly squeezed is best for that vibrant flavor. If you can’t find key limes, regular limes can substitute, but the taste will be slightly different. My personal preference is still the tangy zest of key limes!
Sour Cream: This adds richness to the filling. Greek yogurt can be a good alternative if you’re looking for something lower in fat, and it can still give great flavor.
How Do I Ensure My Pie Bars Are Set Properly?
Getting the filling just right is key to a perfect Key Lime Pie Bar. You want it to be set but still a little jiggly in the center, as it will firm up while chilling. Here’s how to nail it:
- Mix the filling ingredients well to avoid lumps. A smoother mixture helps it cook evenly.
- When baking, watch closely after the 15-minute mark. It should not puff up too much; just set edges with a slightly jiggly center is ideal.
- Cooling at room temperature before chilling is essential. It helps the filling stabilize before going to the fridge.
How to Make Key Lime Pie Bars?
Ingredients You’ll Need:
For The Crust:
- 1 ½ cups graham cracker crumbs
- 1/3 cup granulated sugar
- 1/2 cup unsalted butter, melted
For The Filling:
- 1 can (14 ounces) sweetened condensed milk
- 1/2 cup sour cream
- 3/4 cup key lime juice (freshly squeezed preferred)
- Zest of 2 key limes
- 3 large egg yolks
For The Topping:
- Whipped cream (for serving)
- Lime zest (for garnish)
How Much Time Will You Need?
This recipe will take about 15 minutes to prepare, plus 10 minutes for baking, and a chilling time of at least 4 hours. So in total, you’ll spend about 25 minutes on active cooking, but you’ll need to wait while it sets in the fridge. It’s well worth the wait for these refreshing bars!
Step-by-Step Instructions:
1. Prepare the Oven and Baking Pan:
Start by preheating your oven to 350°F (175°C). While that’s heating up, take an 8×8-inch baking pan and line it with parchment paper. Let some of the paper hang over the sides—this will help you lift out the bars later!
2. Make the Crust:
In a medium bowl, mix together the graham cracker crumbs, granulated sugar, and melted butter. Stir until all the crumbs are nicely coated with butter. Then, take this mixture and press it firmly into the bottom of your lined baking pan. Make sure it’s packed evenly! Bake this crust in the oven for about 10 minutes, or until it turns golden brown. Once done, take it out and let it cool slightly.
3. Prepare the Filling:
In a large mixing bowl, whisk together the sweetened condensed milk, sour cream, freshly squeezed key lime juice, lime zest, and egg yolks. Keep whisking until everything is smooth and well combined. This creamy filling is what makes these bars so delightful!
4. Bake the Filling:
Now, pour the creamy filling over your cooled crust. Spread it out evenly. Pop the pan back into the oven and bake for an additional 15 to 20 minutes. You want the filling to be set but still a little jiggly in the center—this gives it that lovely texture!
5. Cool and Chill:
Carefully remove the pan from the oven and let it cool to room temperature. Once cooled, transfer it to the refrigerator and chill for at least 4 hours until it’s fully set. This is the hardest part—waiting!
6. Serve Your Key Lime Pie Bars:
When you’re ready to enjoy your delicious bars, use the overhanging parchment to lift them out of the pan. Cut them into squares and serve each piece topped with a lovely dollop of whipped cream and a sprinkle of fresh lime zest. Enjoy the refreshing taste of summer!
Can I Use Regular Limes Instead of Key Limes?
Yes, you can! While key limes have a unique flavor that’s sweeter and more fragrant, regular limes can be used if you don’t have access to key limes. Just keep in mind that the flavor will be slightly different, so you might want to adjust the sugar a bit based on your taste.
How Can I Make This Recipe Gluten-Free?
To make these Key Lime Pie Bars gluten-free, simply swap out the graham cracker crumbs for gluten-free graham cracker crumbs or alternatively, use finely ground almonds or crushed gluten-free cookies. The result will be just as delicious!
What’s the Best Way to Store Leftovers?
To keep your Key Lime Pie Bars fresh, store them in an airtight container in the refrigerator for up to 4 days. For longer storage, you can wrap individual bars in plastic wrap and freeze them for up to 3 months. Just thaw them in the fridge when you’re ready to enjoy!
Can I Add Extra Toppings to My Bars?
Absolutely! Besides whipped cream and lime zest, you can get creative with toppings. Consider adding crushed meringue, fresh berries, or even a drizzle of chocolate for a twist. Just be sure not to overload them, so the key lime flavor still shines through!
