These Key Lime Pie Bars are like sunshine on a plate! With a buttery crust and a zesty lime filling, they bring a refreshing twist that’s hard to resist.
Whenever I make these bars, I can’t help but sneak a piece or two before serving. Who can blame me? They’re just that good! 🌞
Making these is super easy! Just mix, bake, and chill. I love serving them with a dollop of whipped cream on top for an extra treat!
Key Ingredients & Substitutions
Graham Cracker Crumbs: The classic base for these bars. If you can’t find graham crackers, crushed digestive biscuits or vanilla wafers work well too. For a gluten-free version, try gluten-free graham crackers or almond meal.
Key Lime Juice: Fresh key lime juice gives the best flavor, but bottled lime juice is a suitable substitute if you’re in a pinch. Regular lime juice is also fine, though the taste will be slightly different.
Sweetened Condensed Milk: This thick, creamy ingredient is essential for the filling. If you’d prefer a lower sugar option, make your own using regular milk and sugar, but it may vary in texture.
Sour Cream: It adds creaminess and a slight tang. Greek yogurt can be a great alternative, providing a similar texture and taste while adding protein.
How Do You Achieve the Perfect Crust for Your Bars?
The crust is foundational for Key Lime Pie Bars, and getting it right is key! Here’s how to ensure it’s both delicious and holds its shape.
- Mix graham cracker crumbs, sugar, and melted butter thoroughly. The mixture should feel like wet sand.
- Press it firmly into the pan. A flat-bottomed measuring cup helps to create an even layer.
- Bake until lightly golden. This step helps the crust firm up, providing a nice crunch when you cut into the bars.
How to Make Key Lime Pie Bars?
Ingredients You’ll Need:
For The Crust:
- 1 ½ cups graham cracker crumbs
- ⅓ cup granulated sugar
- ½ cup unsalted butter, melted
For The Filling:
- 1 can (14 ounces) sweetened condensed milk
- ½ cup sour cream
- ¾ cup fresh key lime juice (or regular lime juice)
- Zest of 2 key limes
- 3 large egg yolks
For The Topping:
- 1 cup heavy whipping cream
- 2 tablespoons powdered sugar
- 1 teaspoon vanilla extract
- Lime zest (for garnish)
How Much Time Will You Need?
This recipe takes about 15 minutes to prepare, plus 30 minutes of baking time, and at least 2 hours of chilling time. So, you’ll need about 2 hours and 45 minutes total, including cooling off time before serving these yummy bars!
Step-by-Step Instructions:
1. Prepare the Crust:
First, preheat your oven to 350°F (175°C). Grab an 8×8 inch baking pan and grease it, or line it with parchment paper for easy removal later. In a medium bowl, mix together the graham cracker crumbs, granulated sugar, and melted butter until all the crumbs are coated. Press this mixture firmly into the bottom of the prepared pan to make an even layer. Bake it in the oven for about 10 minutes until it’s lightly golden. Once done, let it cool.
2. Make the Filling:
In a large mixing bowl, whisk together the sweetened condensed milk, sour cream, key lime juice, lime zest, and egg yolks until the mixture is smooth and well combined. This will give you that delicious tangy filling for your bars!
3. Assemble and Bake:
Pour the filling over the cooled crust, spreading it out evenly. Bake in the oven for another 15-20 minutes. You’ll know it’s done when it’s set but still wobbles a tiny bit in the center. After baking, take it out and let it cool down completely at room temperature, then refrigerate for at least 2 hours until it’s nice and firm.
4. Make the Topping:
While your Key Lime Pie Bars are chilling, let’s whip up the topping! In a medium bowl, whip the heavy cream, powdered sugar, and vanilla extract together until stiff peaks form— this means the cream should hold its shape nicely.
5. Finish and Serve:
Once the bars are chilled, take them out of the fridge and spread the whipped cream topping over the filling evenly. Don’t forget to sprinkle some lime zest on top for that fancy touch! Slice your bars into squares and get ready to enjoy your refreshing Key Lime Pie Bars chilled!
Can I Use Regular Lime Juice Instead of Key Lime Juice?
Absolutely! While key limes give a more authentic flavor, regular lime juice works perfectly in this recipe. Just keep in mind that the taste will be slightly different, but still delicious!
How Should I Store Leftover Key Lime Pie Bars?
Store any leftovers in an airtight container in the fridge for up to 3-4 days. They taste even better the next day as the flavors meld together! Just make sure to keep them chilled.
Can I Make the Crust Ahead of Time?
Yes! You can prepare the crust a day in advance. Just press it into the pan, bake, and then let it cool completely before covering it tightly with plastic wrap. When you’re ready, add the filling and continue with the recipe!
What If My Filling Is Too Runny After Baking?
If your filling is too runny after baking, it might need a bit more time in the oven. Bake it for an additional 5 minutes, checking frequently until it is set with a slight jiggle in the center. Remember to let it cool and chill well, as it will firm up in the fridge!
