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Our Key Lime Pie Bars have a graham cracker crust under a creamy key lime filling and topped with whipped cream. They're easy to make and perfect for parties, potlucks, or anytime!

Want more pie recipes? Try Lemon Cream Pie, Coconut Cream Pie, Banana Cream Pie, or No-Bake Cheesecake!

Easy key lime pie bars cut into squares and topped with whipped cream and fresh lime zest.

Key Lime Pie Bars mean working smarter, not harder.

There are a few reasons I transformed my favorite Key Lime Pie , into bars. Mainly, they are really easy to cut and serve this way, as a simple finger food–no fork (or even plate) needed. They're also easier transport in a baking dish with a lid, to stack in the fridge, etc. You can also double the recipe in a 9×13” pan to feed more guests, very easily. And the best part is they're just as delicious as “pie” with a creamy, tart lime filling.

How to make Key Lime Pie Bars:

Make Graham Cracker Crust: Mix sugar, melted butter, and graham crackers together then press into an 8″ square baking pan. Bake for 10 minutes at 350°F then let cool.

Two images showing graham cracker, sugar, and melted butter in a bowl then after it's pressed into a square dish for a key lime bars recipe.

Make Filling: Beat cream cheese in a mixing bowl until smooth, then add sweetened condensed milk, lime juice, and lime zest, mixing until smooth. Pour over graham cracker crust and bake for 10 minutes. Cool for 30 minutes then refrigerate for at least 3 hours before serving with a dollop of whipped cream, if desired.

Two images showing key lime squares before they are baked then after they are baked, cooled, and cut into squares and topped with whipped cream and a lime slice.

Make Ahead and Freezing Instructions:

To Make Ahead: The bars can be made up to 3 days ahead of time, stored in the fridge. The graham cracker pie crust could be made several days ahead, stored at room temperature or in the fridge.

To Freeze: Cover pan tightly with plastic wrap and aluminum foil and freeze for up to 3 months. Thaw overnight in the fridge before serving.

More Bar Recipes:

4.92 from 350 votes

Key Lime Pie Bars

Author: Lauren Allen
The best Key Lime Pie Bars have a buttery graham cracker crust under a creamy key lime filling and topped with whipped cream. They're easy to make and perfect for parties and potlucks.
Prep: 1 hour 15 minutes
Cook: 15 minutes
Total: 1 hour 30 minutes
Servings: 12

Ingredients 
 

Graham Cracker Crust:

  • 1 1/2 cups graham cracker crumbs, (about 12 full sheets, crushed)
  • 1/3 cup granulated sugar
  • 6 Tablespoons butter, , melted

Key lime filling:

Instructions 

  • Make Crust: For the crust, combine the graham cracker crumbs, sugar, and butter and press into an 8'' square baking pan. 
  • Bake at 350 degrees F for 10 minutes. Allow to cool before adding filling.
  • Filling: Add cream cheese to a mixing bowl then beat well with electric beaters until smooth. Add both cans of sweetened condensed milk, lime juice, and lime zest then mix again until smooth. 
  • Bake: Pour over prepared graham cracker crust and bake in preheated oven for 10 minutes. Allow to cool for about 30 minutes, then refrigerate for at least 3 hours, before serving.
  • Serve: Top with a dollop of fresh whipped cream, if desired.

Notes

Lime Juice: There are 2 ways you can get key lime juice for this recipe. Juice about 20 of your own small key limes, OR I always use Nellie and Joe's Key Lime Juice (available at most grocery stores) in the bottle.
Make Ahead Instructions: The bars can be made up to 3 days ahead of time, stored in the fridge. The graham cracker pie crust could be made several days ahead, stored at room temperature or in the fridge.
To Freeze: Cover pan tightly with plastic wrap and aluminum foil and freeze for up to 3 months. Thaw overnight in the fridge before serving.

Nutrition

Calories: 153kcal, Carbohydrates: 15g, Protein: 1g, Fat: 10g, Saturated Fat: 6g, Polyunsaturated Fat: 0.4g, Monounsaturated Fat: 3g, Trans Fat: 0.2g, Cholesterol: 25mg, Sodium: 144mg, Potassium: 51mg, Fiber: 0.4g, Sugar: 9g, Vitamin A: 310IU, Vitamin C: 5mg, Calcium: 22mg, Iron: 0.5mg

Nutrition information is automatically calculated, so should only be used as an approximation.

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I originally shared this recipe June 2015. Updated November 2020 and November 2024.

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About The Author

Lauren Allen

Welcome! I’m Lauren, a mom of four and lover of good food. Here you’ll find easy recipes and weeknight meal ideas made with real ingredients, with step-by-step photos and videos.

4.92 from 350 votes (294 ratings without comment)
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todd schroeder
1 day ago

5 stars
I’ve made this recipe several times and the last time I added a little bit of cinnamon to the graham crackers. Not enough that it was over powering and I didn’t measure it, I added just until I had a small hint of cinnamon by taste test. There is never a bar left after making them. Thanks for the recipe.

Mercedes
1 month ago

I followed this recipe exactly and let my bars sit overnight in the fridge. They came out perfectly. I think they really need to chill and rest to set. They ended up being solidified enough to hold their shape and be eaten as bars. I also thought the flavor was perfect. The filling is tart and the crust and whipped cream (I used Redi Whip) helped cut the tartness for a nice balance. My dad is picky about key lime pie flavor and he thought this was great.

karen.snook@verizon.net
3 months ago

2 stars
Taste is great but mine didn’t settle. Soft and wet. Even baked it longer because 10 min didn’t seem anywhere near settled.

Last edited 3 months ago by karen.snook@verizon.net
Sarah K
3 months ago

5 stars
So yummy! The tang is perfect

Cynthia
5 months ago

5 stars
This is my second time making them. Was a huge hit at my last cookout. Of course they have been requested again lol. I making a double batch this time. Great and easy recipe. Thank you. I know I’ll be making this forever now. lol

Gentry
4 months ago
Reply to  Cynthia

what size of pan do you use when you make a double batch?

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