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Best Key Lime Pie Recipe

February 9, 2019 by Amy 2 Comments

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The best Key Lime Pie recipe is made from scratch with a buttery graham cracker crust, real key lime juice and zest, and a smooth and creamy filling that is the perfect balance of tart and sweet.  

The best Key Lime Pie recipe is made from scratch with a buttery graham cracker crust, real key lime juice and zest, and a smooth and creamy filling that is the perfect balance of tart and sweet.  

I couldn’t get through Florida Week without sharing a recipe for the best key lime pie I’ve ever had!

Key lime pie is such a classic dessert and the first thing I thought of for Florida when brainstorming ideas for my American Eats series.  Well, that, and all sort of Cuban food and anything with oranges or orange juice.  I didn’t get around to sharing any recipes highlighting oranges this week, but you should definitely try these knotted orange sweet rolls that my sister-in-law Deborah shared with me a few years back.  They are incredible and packed with fresh orange flavor.

Key lime pie is surprisingly easy and quick to make using either fresh key lime juice squeezed from about 20 key limes, or using bottled key lime juice which you can find at most grocery stores or order online.

An image of a slice of key lime pie with whipped cream on a white plate with a fork.

An authentic key lime pie recipe uses only key lime juice, lime zest, sweetened condensed milk, and egg yolks for the filling.  I’ve seen a number of key lime pie recipes that also include cream cheese or sour cream, but I wanted to stay true to the original version.  The lime zest not only boosts the lime flavor, but it adds little specks of green that make this pie extra pretty.  I also sprinkle a little extra zest over the top of the pie just for looks.

The fresh citrusy flavor of this Florida original is out of this world.  And it’s perfect with the traditional graham cracker crust that is really easy (and honestly, so much tastier) made at home rather than buying a pre-made store-bought crust.

An image of a graham cracker pie crust for key lime pie.An image of a homemade key lime pie made with real key lime juice, sweetened condensed milk, and egg yolks, baked in a graham cracker crust.An image of slices of easy key lime pie made from scratch and served on white plates.

I like to top this easy key lime pie recipe with sweetened whipped cream rather than a meringue.  Not only does it taste delicious, but it makes for a pretty presentation as well, especially with thin key lime slices on top for decoration.

I love how simple and easy this pie is to make.  There’s no rolling out a crust or long ingredient list.  It’s practically foolproof.

An image of a slice of classic key lime pie topped with whipped cream and key lime zest on a graham cracker crust.An image of a classic key lime pie topped with whipped cream swirls.

This key lime pie would be perfect for Pi Day or Easter, which are both coming up.  But you can enjoy it all year long!

What is the difference between a lime and a key lime?

Key limes are smaller and have a more intense flavor than the larger Persian limes that we are familiar with and see in the grocery store all the time.  The key lime flavor is slightly more tart than regular limes.

Key limes also have a thinner skin than larger limes, which means they don’t last as long in stores and you will probably only find them seasonally.  They also tend to have more seeds in them.

One other difference is that the juice from key limes isn’t as green, which is why the color of key lime pie is more yellow (also, because of the four egg yolks in the pie, which also contribute to the yellow hue).

Zesting those little key limes is not as easy as as the larger Persian limes, but I’ve heard you can use a garlic press to make it easier.  I don’t have one so I just used my regular juicer and made it work.

Can you substitute lime for key lime?

Yes and no.  Honestly?  The flavor of the key lime pie just isn’t the same with Persian limes as opposed to key limes.  But okay, yes, it’s doable – good even.  Please, nobody excoriate me in the comments for making such a declaration.

If key limes aren’t available, I would first recommend looking for bottled key lime juice, which you will find next to the regular lime juice.

If that doesn’t work, you could certainly make this recipe with just regular lime juice.  But I would definitely recommend using fresh-squeezed lime juice as opposed to bottled if going this route.

It takes about 20-24 key limes to get the key lime juice you need for this key lime pie recipe.

An image of key limes on a cutting board next to a juicer.An image of juiced key limes next to the fresh key lime juice for making the best key lime pie recipe.

How to Make Key Lime Pie

Start by making the graham cracker crust.

Don’t worry about making the crust climb too high by pressing it way up the sides of the pie pan.  This isn’t a deep dish pie recipe and if you make the crust too tall around the edges, it will just crumble off and not look as pretty since the filling doesn’t fill a regular 9-inch pie plate to the top.

An image of graham cracker crumbs in a measuring cup for a graham cracker crust for key lime pie.

I like to pre-bake the crust for 10 minutes to help it hold up when I pour the filling in.

Making the key lime pie filling is just a matter of whisking together the lime juice, lime zest, sweetened condensed milk, and egg yolks in a bowl.  See?  Foolproof.  You don’t even need an electric mixer.

Pour that into the crust and bake for 15-20 minutes in a 350 degree F oven.  The center should still be jiggly when you shake it but the edges will be pretty set.  The pie will continue to set up as it cools.  I pulled mine out right around the 15-16 minute mark.

Let the pie cool for 1 hour on a wire rack, then transfer to the fridge and chill at least 3 hours.

Top with sweetened whipped cream and garnish with slices of lime and lime zest.

You could put your whipped cream into a piping bag fitted with a round tip or a star tip and pipe on pretty swirls.  Some people like to completely cover the top of their key lime pie with whipped cream, which is another option you might want to try.  I just thought the whipped cream swirls looked pretty for the photos, otherwise I probably would have just dolloped it on.

An image of a homemadde Florida key lime pie made from scratch and topped with whipped cream swirls and thin slices of key limes.An image of a sliced key lime pie with fresh key limes surrounding it.An image of a sliced key lime pie with fresh key limes surrounding it.

If You Like This Key Lime Pie Recipe, You Might Also Like:

  • No-Bake Sour Cream Lemon Pie
  • Double Lemon Glazed Cookies
  • Coconut Lime Glazed Banana Bread
  • Brazilian Lemonade (Limeade)
  • Passion Fruit Lemon Loaf Cake
5 from 1 vote
The best Key Lime Pie recipe is made from scratch with a buttery graham cracker crust, real key lime juice and zest, and a smooth and creamy filling that is the perfect balance of tart and sweet.  
Print
Best Key Lime Pie Recipe
Prep Time
10 mins
Cook Time
15 mins
Chilling Time
3 hrs
Total Time
25 mins
 

The best Key Lime Pie recipe is made from scratch with a buttery graham cracker crust, real key lime juice and zest, and a smooth and creamy filling that is the perfect balance of tart and sweet.  

Course: Dessert
Cuisine: American
Keyword: best key lime pie recipe, key lime pie
Servings: 8 servings
Calories: 249 kcal
Author: Amy Nash, House of Nash Eats
Ingredients
Graham Cracker Crust
  • 1 graham cracker crust
Filling
  • 1 (14-ounce) can sweetened condensed milk
  • 2/3 cup fresh key lime juice from 20-24 key limes
  • 2 teaspoons grated key lime zest from 3-4 key limes, plus thin curled strip for garnish
  • 4 large egg yolks
Topping
  • 1 cup heavy cream
  • 2 tablespoons powdered sugar
Instructions
  1. Preheat oven to 350 degrees F.  Prepare graham cracker crust and bake for 10 minutes until set.  Cool while preparing filling. 

  2. Whisk together condensed milk, key lime juice, key lime zest, and egg yolks.  Pour into pie crust.

  3. Bake for 15-20 minutes, until the pie is mostly set around the edges but still slightly jiggly in the center.  Cool on a wire rack for 1 hour, then transfer to the refrigerator and chill for 3 hours.

  4. Prepare whipped cream by beating the cream and powdered sugar with an electric mixer on high speed for 2 to 3 minutes until soft peaks form.  Spread on top of pie or transfer to a piping bag fitted with a round tip or star tip and pipe decorative swirls around the border of the pie.  Garnish with thin slices of key limes and lime zest, then slice and serve.

Nutrition Facts
Best Key Lime Pie Recipe
Amount Per Serving
Calories 249 Calories from Fat 162
% Daily Value*
Total Fat 18g 28%
Saturated Fat 8g 40%
Cholesterol 133mg 44%
Sodium 116mg 5%
Potassium 79mg 2%
Total Carbohydrates 18g 6%
Sugars 6g
Protein 3g 6%
Vitamin A 11.4%
Vitamin C 7.7%
Calcium 3.9%
Iron 4.4%
* Percent Daily Values are based on a 2000 calorie diet.

Want to see the other states I’ve visited in my American Eats Series?  Check them out below!

Alabama

Alaska

Arizona

Arkansas

California

Colorado

Connecticut

Delaware

Florida

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Filed Under: American, American Eats, Dessert, Fruit, Pie, Recipes, Summer Tagged With: best key lime pie, best key lime pie recipe, easy key lime pie recipe, homemade key lime pie, key lime juice, key lime pie

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Reader Interactions

Comments

  1. Wendy says

    February 17, 2019 at 2:20 pm

    There’s just no substituting for fresh key limes! Well worth juicing them for the flavor. Thanks for sticking with a true recipe and not the artificially flavored or colored versions!

    Reply
  2. Carol Borchardt says

    February 17, 2019 at 4:49 pm


    Key Lime Pie is one of my absolute favorite desserts! Your photos are beautiful and my mouth is watering just looking at this amazing pie. This one is definitely going on my must-make list; I think it would be a spectacular Easter dessert!

    Reply

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Hi! I'm Amy. I enjoy exploring the world through food, culture, and travel and sharing the adventure with mostly from-scratch, family friendly recipes that I think of as modern comfort cooking. Read More…

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