A luscious, creamy key lime pie recipe made with heaps of sweet-tart limes and a buttery graham cracker crust. This pie is excellent for making in advance or freezing for later!

Why this recipe works
If you’ve ever been to Key West, you know you can find treats of the key lime pie variety at shops all over town. When I was in Key West a few years ago, my kids and I stopped in to Kermit’s Key West Key Lime Shoppe. You can buy pie, pie bars, candy, jellies, and more. It’s a definite must-visit attraction while visiting. But let’s move on to making our own Key Lime Pie so you don’t have to fly to Florida, shall we?
There are a few theories about how this sweet-tart cream pie came to be. One of the oldest stories comes from the 1800’s and tells of Bill Curry, Florida’s first self-made millionaire. Bill’s “Aunt Sally” used to make the pie for him. However, historians don’t think Sally created it, but rather adapted a recipe created by local fishermen.
Fast forward to 1930 when the Overseas Highway was built. Prior to that, the Keys did not have refrigeration, and therefore no way to store milk. Instead, cooks depended on sweetened condensed milk for many of their dishes. You guessed it… including key lime pie!
RELATED: Be sure to try our Key Lime Pie Martini too!

Ingredient Info and Substitution Suggestions
Get all measurements, ingredients, and instructions in the printable version at the end of this post.
GRAHAM CRACKER CRUMBS – You can grind them in a food processor, smash them in a zipper plastic bag, or buy them in crumb form.
BUTTER – You’ll need melted butter, salted or unsalted is fine.
LIME JUICE – About a dozen Key limes should yield 1/2 cup of juice. Key limes are only about the size of a golf ball, so they produce much less juice compared to your typical lime. Please don’t use regular limes, you will insult the entire state of Florida! Alternatively, you can use bottled key lime juice if you can find it at your grocery store, though fresh is always best.
GARNISH – Lime peel strips make a really pretty garnish. It’s easiest to peel the strips off before juicing the limes. Otherwise, lime zest also looks great!
How to Make Key Lime Pie
These step by step photos and instructions are here to help you visualize how to make this recipe. You can Jump to Recipe to get the printable version of this recipe, complete with measurements and instructions at the bottom.
- First, preheat your oven to 325 degrees F.
- Combine all the crust ingredients in a bowl, mixing with a fork.

- Using the back of a measuring cup, press the crust mixture evenly into the bottom and up the sides of a 9-inch pie plate.

- Bake for 10 minutes and cool on a wire rack.
- In a medium bowl, whisk together sweetened condensed milk, lime juice, and egg yolks until mixture thickens.

- Pour filling into cooled crust. Pie filling will be yellow in color, not green.
- Bake until set, about 15-17 minutes. The center will jiggle slightly when nudged.
- Cool completely on wire rack.
- Refrigerate until cold, at least 4 hours or up to 24 hours.
- Before serving, beat whipping cream and powdered sugar in a deep, chilled bowl until soft but firm peaks form.

- Add dollops, or pipe whipped cream around the outside edge of the pie and sprinkle with lime peel strips.

Frequently Asked Questions & Expert Tips
A runny pie may be due to underbaking or not enough chilling time. Be sure to let it set completely before slicing.
Absolutely! Wrap individual slices tightly in plastic wrap, then in aluminum foil or an airtight container. Store in the freezer for up to 2 months. Thaw in the refrigerator overnight before serving.
Yes, of course. Key lime pie is an excellent candidate for prepping a day in advance, as letting it rest in the refrigerator helps develop the flavors even further. You can prep the pie up to step 9, and simply leave it to chill in the fridge overnight. Then, when ready to serve, top with whipped cream and garnishes.

Serving Suggestions
There, isn’t that beautiful? This tangy, creamy treat is a must-try at least once in your life. And it’s so beautiful you will totally impress your friends.
Key limes are typically in season from June through September, which makes this a sweet summer pie. Great for barbecues, potlucks, and parties, though you’ll even see it on the dessert table around the holidays!
More Pie Recipes
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Key Lime Pie
IMPORTANT – There are often Frequently Asked Questions within the blog post that you may find helpful. Simply scroll back up to read them!
Print It Pin It Rate ItIngredients
Crust
- 1 ½ cups graham cracker crumbs
- 2 Tablespoons sugar
- 5 Tablespoons butter melted
Filling
- 14 ounce can sweetened condensed milk
- ½ cup lime juice from Key limes – you could need about a dozen to get this much juice
- 4 large egg yolks
Topping
- 1 cup heavy whipping cream
- 1 Tablespoons powdered sugar
- Lime peel strips or lime zest, optional as garnish
Things You’ll Need
Before You Begin
- About a dozen Key limes should yield 1/2 cup of juice. Key limes are only about the size of a golf ball, so they produce much less juice compared to your typical lime. Please don’t use regular limes, you will insult the entire state of Florida! Alternatively, you can use bottled key lime juice if you can find it at your grocery store, though fresh is always best.
- You can grind your graham crackers in a food processor, smash them in a zipper plastic bag, or buy them in crumb form.
Instructions
Crust
- Preheat oven to 325 F.
- Combine crust ingredients in a bowl with a fork.1 1/2 cups graham cracker crumbs, 2 Tablespoons sugar, 5 Tablespoons butter
- Using the back of a measuring cup, press the crust mixture evenly into the bottom and up the sides of a 9-inch pie plate.
- Bake for 10 minutes and cool on a wire rack.
Filling
- In a medium bowl whisk together sweetened condensed milk, lime juice, and egg yolks until mixture thickens.14 ounce can sweetened condensed milk, 1/2 cup lime juice, 4 large egg yolks
- Pour filling into cooled crust.
- Bake until set, about 15-17 minutes. The center will jiggle slightly when nudged.
- Cool completely on wire rack.
- Refrigerate until cold, at least 4 hours or up to 24 hours.
Topping
- Before serving, beat whipping cream and powdered sugar in a deep, chilled bowl until soft but firm peaks form.1 cup heavy whipping cream, 1 Tablespoons powdered sugar
- Add dollops, or pipe whipped cream around the outside edge of the pie and sprinkle with lime peel.Lime peel strips
Expert Tips & FAQs
- Make ahead – Key lime pie is an excellent candidate for prepping a day in advance, as letting it rest in the refrigerator helps develop the flavors even further. You can prep the pie up to step 9, and simply leave it to chill in the fridge overnight. Then, when ready to serve, top with whipped cream and garnishes.
- To freeze – wrap individual slices tightly in plastic wrap, then in aluminum foil or an airtight container. Store in the freezer for up to 2 months. Thaw in the refrigerator overnight before serving.
Nutrition
The recipes on this blog are tested with a conventional gas oven and gas stovetop. It’s important to note that some ovens, especially as they age, can cook and bake inconsistently. Using an inexpensive oven thermometer can assure you that your oven is truly heating to the proper temperature. If you use a toaster oven or countertop oven, please keep in mind that they may not distribute heat the same as a conventional full sized oven and you may need to adjust your cooking/baking times. In the case of recipes made with a pressure cooker, air fryer, slow cooker, or other appliance, a link to the appliances we use is listed within each respective recipe. For baking recipes where measurements are given by weight, please note that results may not be the same if cups are used instead, and we can’t guarantee success with that method.
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