These delicious Key Lime Pie Bars include a three-ingredient graham cracker crust with the easiest key lime pie filling. They’re easy to make, transport and serve at parties and potlucks.

Looking for more great ideas?  Don’t miss our Perfect Lemon Bars, Pecan Pie Bars, and Homemade Twix Bars.

Key lime pie bars with whipped cream on top and garnished with lime zest.

I adapted these Key Lime Pie Bars from my favorite Key Lime Pie recipe, and they are amazing! I love the idea of serving pie in “bar” form for parties. They’re easy for people to grab, they look beautiful, and taste even better!

How to make Key Lime Pie Bars:

  • 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.
  • Add cream cheese to a mixing bowl and beat well with electric beaters until smooth. Add both cans of sweetened condensed milk, lime juice, and lime zest and mix again until smooth.
  • 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.
  • Cut into squares and top with fresh whipped cream, if desired.

Three process photos for making key lime pie filling, a graham cracker crust, and adding it to a square baking sheet for key lime pie bars.

Make Ahead and Freezing Instructions:

To make ahead, prepare and bake the pie up to 3 days in advance, stored in the refrigerator. The filling and crust can both be prepared separately, in advance, and then assembled and baked when ready.

Baked Key Lime Pie can be frozen for up to 3 months. Thaw overnight in the refrigerator before serving.

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Recipe

Key lime pie bars with whipped cream on top and garnished with lime zest.
Prep 1 hour 15 minutes
Cook 15 minutes
Total 1 hour 30 minutes
Save Recipe

Ingredients
  

For the 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:

  • 2 14 ounce cans sweetened condensed milk
  • 4 ounces cream cheese , softened
  • 3/4 cup key lime juice*
  • zest of 2 regular limes , or 4 key limes
  • fresh whipped cream , for topping, optional

Instructions
 

  • For the crust, combine the graham cracker crumbs, sugar, and butter and press into an 8'' square baking pan. 
    Homemade graham cracker crust pressed into a square baking pan.
  • Bake at 350 degrees F for 10 minutes. Allow to cool before adding filling.
  • Add cream cheese to a mixing bowl and beat well with electric beaters until smooth. Add both cans of sweetened condensed milk, lime juice, and lime zest and mix again until smooth. 
    Key lime pie filling mixed together in a bowl.
  • 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.
    Key lime pie bars ready to bake.
  • Top with 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: prepare and bake the pie up to 3 days in advance, stored in the refrigerator. The filling and crust can both be prepared separately, in advance, and then assembled and baked when ready. 
Freezing Instructions: Baked Key Lime Pie can be frozen for up to 3 months. Thaw overnight in the refrigerator before serving. 

Nutrition

Calories: 242kcalCarbohydrates: 33gProtein: 4gFat: 10gSaturated Fat: 6gCholesterol: 59mgSodium: 166mgPotassium: 164mgSugar: 26gVitamin A: 325IUVitamin C: 3.9mgCalcium: 115mgIron: 0.6mg

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

Key Lime Pie Bars from TastesBetterFromScratch.com

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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.

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Comments

  1. Loved this recipe. I swapped out one can of condensed milk and used 8 oz of cream cheese instead. Less sweet but just as delicious. Took a while to set, finished them off in the freezer.

  2. Hello Lauren,

    Love this recipe. It’s spectacular! Now I want to swap out the key lime juice for lemon juice to create lemon bars. Comments?

  3. 5 stars
    These are so great and I’ve managed to make them in an 8×8 pan and in mini cupcake sizes without adjusting the bake times. The recipe is the perfect texture (imo) if you double the cream cheese. Easy, delish, and a big hit at every potluck

  4. 3 stars
    We made it yesterday with limes from our key lime tree. Ours was very dark – beige in color, looked less firm and more “wobbly” even though we refridged overnight. I was wondering if it was 2 cream cheese blocks and one can of condensed milk instead.

  5. 3 stars
    While the flavor of the key lime filling was delicious, overall these bars were a disappointment as they would not come our of the pan intact. In looking now at other recipes, the directions state to spray the bottom with cooking spray. Unfortunately, I am left with a graham cracker crust stuck to the bottom of the pay.

  6. 5 stars
    Wow! These are amazing! I am making again to freeze for my girlfriend bash!!
    I discovered last time I made them that they are actually deliscious frozen! They dont freeze super hard & are great frozen the the Texas Heat!!!
    I doubled the recipe today, Do I need to bake longer?
    They are in a 9×13 pan.
    Thanks for supplying such a delightful treat! My previous guests were sneaking them out of the freezer before bed time💚

  7. These bars are delicious. For my purposes, I needed a bar that would “hold it’s shape” for cutting and serving to a crowd. Based on past reviews, I upped the cream cheese and reduced the condensed milk, as follows: 4-14 oz cans sweetened condensed milk and 2 full cream cheese bars (16oz total) — this recipe made enough for a 9×13 and an 8×8. Also increased the zest for personal preference. Baking instructions are spot-on. After cooling and refrigerating for a couple of hours, the bars are picture perfect for a party.

  8. 5 stars
    Delicious! So sweet and zesty. I followed the recipe exactly (I forgot the zest). I found that 6 regular limes gave me exactly 3/4 cup lime juice.

  9. 5 stars
    I made this yesterday and the whole family loved it!! It’s so tangy and the crust is probably my favorite part. My son, who usually only eats chocolate, practically inhaled it!
    I think I’m going to have to make another one this weekend and double the recipe!
    It’s also very quick and easy to make for a summer gathering. And you could definitely make it the day before since it has to be refrigerated.
    Thanks for this delicious recipe!

  10. 5 stars
    I made this recipe when my mom and sister came for a visit. It was a hit! The pie was sweet, creamy, and refreshing. Definitely give it a try!

  11. 5 stars
    I made these yesterday as written except for using 8 oz. of cream cheese as someone suggested and they are fabulous! I’ve been making mini key lime pies for a long time and love how much more convenient these bars are. Thank you, Lauren

  12. 3 stars
    Nice lime flavor and super easy to make. I personally found the recipe too sweet and too soft (I live in a warm climate). Next time, I might scale up the cream cheese and cut back on the sweetened condensed milk – I’m looking for a firmer texture and a little more tartness. That said, these disappeared quickly at the potluck.

  13. 5 stars
    Great recipe except for one caveat, for me the 1.5 cups graham cracker crumbs do not equal 12 full sheets, its a lot more. I found a similar recipe than lists 180 grams crumbs which would be about 12 rectangular pieces. May be why some had a squishy crust…

  14. 5 stars
    THE BEST RECIPE EVER! I made this for a BBQ and made one in an 8×8 pan and another in a slightly bigger pan and they were both perfect. It was the right amount of tang and sweet and the crust is everything! My boyfriend took the leftovers to his work and got raving compliments. It was incredibly easy to make and I enjoyed licking the batter from the bowl and the spoons. I can’t wait to make this again!

  15. 5 stars
    I received so many compliments on these bars. I doubled the crust recipe and put it in a 9×13 dish. Also, I used 8 oz of cream cheese and close to a cup of key lime juice. I cut the bars into squares and served with a squirt of whipped cream and a small twist of lime as garnish. I will definitely make this again!

  16. 5 stars
    These were fantastic!
    Followed the recipe using bottled Nellie & Joe’s key lime juice and they turned out perfectly.

  17. Absolutely love the recipe! Have made it dozens of times with no issue at all. Delicious.

    Any shot you think it’d work in muffin tins/mini muffin tins?!

    Thinking of trying it this upcoming weekend.

  18. I would love to make these for Thanksgiving but how can you double or even triple the recipe but still use an 8×8 pan?
    I look forward to a response, Thanks

  19. Whoo-whee! These are FABULOUS! My daughter made these for a party, and everyone raved. The flavor was perfect. They are superior (by far) to any Key Lime bar or pie I have ever had. Now I’m “stealing” the recipe. Good work and thanks!

  20. 1 star
    Already had all the ingredients for this, so, decided to try it out. Not a fan. Was left with gummy ‘crust’, with filling that defeated the purpose of a dessert bar, as you’d be better off eating it, with a spoon.

    1. Hi Decca, did you bake it for 10 minutes after putting the filling in? That’s what helps set the bars. Before that happens, it’s more liquidy. When the recipe is followed exactly, it is pretty fool proof. Try again- they’re fantastic!

  21. 5 stars
    I always get rave reviews when I make these. I often make them for new neighbors as a welcome gift and also my grandchildren often request these. I’ve made these bars for families with children in the neighborhood and the kids always say this is now their favorite cookie. Thanks for sharing this great recipe.

  22. Absolutely delicious! Made these for a church BBQ, and they were a big hit. I doubled the recipe and used a 9×13 pan. I increased final baking time by about 8 minutes. Thanks for the great recipe!

  23. 2 stars
    These are more sweet than tart. You evidently can’t skip to recipe because there are details left out of the instructions. My 8×8 pan must not be the same size as the author’s 8×8 pan. I had almost half the filling leftover. Probably won’t come back to this recipe.

    1. Elizabeth, Sorry to hear you didn’t love the recipe. Not sure what went wrong but I’ve made this dozens of times and it always fits in an 8×8 pan. You can check through the other comments too. I’m wondering if you accidentally doubled or tripled the recipe by hitting the 2x or 3x button on the side. (Doubling or tripling the recipe would mean using a bigger pan or multiple pans!)

  24. 5 stars
    Chef’s kiss on this one!!! Fantastic. Rich and creamy, tart and tangy. This one will definitely go into my recipe book.

  25. 5 stars
    These were delicious. I followed the directions exactly and they turned out well. The only issue I had was with the crust sticking to the bottom of my pan. No where in either set of instructions does it say to spray or line with paper, but the video seems to show the use of paper. I’ll be doing that next time I make these, but it’d have been helpful to have that in the instructions. Also I made this in the winter when limes are kinda meh and it still turned out super well which was great. We love a little taste of summer when it is cold.

  26. 5 stars
    Made these yesterday and were a HUGE hit. Parchment paper is a MUST. When I made these the first time , I completely forgot the parchment paper, and I cannot even tell you the mess I made! Lol!! Don’t forget parchment paper 😉. Great recipe!!

  27. 5 stars
    The BEST key lime bars ever! They were a huge hit at a party we attended.
    I would like to know if I change them to lemon, would I use the same amount of fresh squeezed lemon juice as the amount called out for the key lime juice.

    Thank you

  28. 5 stars
    Loved this recipe. Do you know what the cooking temp and time would be if you turned them into individual pies using a muffin tin?

  29. 5 stars
    This was great. Do you think you could make these in an individual muffin/cupcake pan? If so , any idea what the cooking instructions might be? I’m so bad at determining that kind of stuff.

  30. 5 stars
    These were SO good! And easy to make. I brought these to a party, and everyone raved about how good they were.

  31. Will these turn out the same as the previous recipe that used sour cream? We know and love that one so I’m a little nervous with the cream cheese change. Is the sour cream version available somewhere else? Thanks!!

    1. We feel the same way! Is there any way to gain access to the old version too? My family goes nuts for it

  32. 5 stars
    Those are the best key lime bars we’ve ever tasted!!! My husband just said, these are as good as we have ever had in Key West!! Actually, better!! Thank you, for this recipe, absolutely amazing!!

  33. I am wondering if you could use the graham crackers and process them in a food processor if you are not able to find the crumbs. During this Covid 19, I am having a hard time finding a lot of baking products! I am sure I am not the only one having that problem! 😟

  34. 5 stars
    At my son’s request, made these tonight, I inadvertently left the sugar out of the crust but it turned out great, was a huge hit!

  35. 5 stars
    Making this a second time! The first I made the filling only and used a store bought Graham crust then made a meringue topping with the egg whites, was a good balance of sweet/tart. I used Joyce Lafray’s bottled key lime juice.

  36. 5 stars
    Made this a bunch of times this year! delicious! Curious if I could substitute plain yogurt for sour cream -ran out-?

  37. Any luck with “quickly cooling” and refrigerating just for a few hours before a picnic? These are our favorite!

    1. Hi Kayla, You can double the recipe to use a 9×13”pan! Good luck, and I hope everyone loves it!

  38. hi! These look so great! Simple and classic. Most of all, easy to grab and go! We are going to the beach for two weeks and I would love to make these and bring them with us. Do you have any experience with freezing them?

    1. Hi Melissa, I honestly couldn’t recommend freezing them…I’ve never done it. But I’d love to know if you try it!

  39. This is one of those instances where I reallyyy wish I could just grab things outta the screen–those bars look so tasty! <3

  40. Lauren, I wanted to eat the photo — gorgeous! I know my husband will be happy if I make these for him. He loves lime.