Meringue Topped Key Lime Pie

A key lime pie made from scratch using real key lime juice, a graham cracker crust, and a fluffy meringue topping.
5 from 2 votes

This recipe was kindly given to me by a chef at one of my favorite beachfront restaurants many years ago. It is an authentic key lime custard topped with meringue. You’ll never go back to a fake green key lime pi!


5 from 2 votes

Classic Key Lime Pie with Meringue Topping

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A key lime pie made from scratch using real key lime juice, a graham cracker crust, and a fluffy meringue topping.
Prep Time:1 hr
Cook Time:15 mins
chilling time:1 d
Total Time:1 d 1 hr 15 mins
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Graham Cracker Crust

  • 10 graham crackers
  • 6 tablespoons butter salted (or add pinch of salt)
  • 1/3 cup white sugar
  • 1/2 teaspoon cinnamon

Lime Filling

  • 1/2 cup key lime juice fresh or bottled (Nellie and Joe’s)
  • 1 can sweetened condensed milk
  • 2 tablespoons sour cream
  • 3 egg yolks reserve whites for the meringue
  • 1 teaspoon lime zest optional

Meringue Topping

  • 4 egg whites
  • 1/2 cup white sugar
  • 1 teaspoon cornstarch


Make the Graham Cracker Crust

  • Preheat oven to 375 with the rack in the center.
  • Crush the graham crackers into crumbs using a food processor.  Melt the butter and add it to the graham cracker crumbs along with the sugar and cinnamon.  Press crumbly mixture into 9-inch pie plate.  Bake for 7 minutes.  Do not overbake, or the crust will be too hard to slice.  Cool at room temperature before filling
    graham cracker crumbs being pressed into crust

Make the Key Lime Filling

  • Combine the sweetened condensed milk, key lime juice, egg yolks, sour cream, and lime zest.  Make sure to blend well using a whisk until there are no bits of egg yolk visible. Pour the lime filling into the graham cracker crust. Crustl with the lime filling for at least 2 hours
    graham cracker crust filled with key lime filling
  • Place egg whites into a separate bowl, and cover and chill at least 2 hours

Assemble and Bake

  • Preheat oven to 350.
  • Make the meringue by whipping the egg whites, sugar, and pinch of cornstarch until stiff peaks are formed  Pipe or spread the meringue on the pie.
    egg white meringue in bowl and on top of pie
  • Bake for 15-17 minutes, until meringue is browned. Cool at room temperature for 2 hours, then refrigerate for at least 12 hours.  
    fully baked pie, showing browned topping


You can’t rush this pie.  The chilling stage is absolutely essential for the pie to set.  
Not a fan of meringue?  Just leave it off.   Bake the pie after pouring in the custard for 8 minutes, just to set it.  The chilling stage is still needed.
Meringue weeping?  It happens to the best of us.  The cornstarch will prevent this, but over time the humidity of the fridge can cause your meringue to run a bit.  It’s bestth next day and will usually weep on day 2. 


Calories: 198kcal | Carbohydrates: 35g | Protein: 4g | Fat: 5g | Saturated Fat: 1g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 2g | Cholesterol: 76mg | Sodium: 158mg | Potassium: 83mg | Fiber: 1g | Sugar: 26g | Vitamin A: 135IU | Vitamin C: 1mg | Calcium: 41mg | Iron: 1mg
Course: Dessert
Cuisine: American, european
Keyword: key lime pie with bottled juice, key lime pie with meringue topping, the best key lime pie
Servings: 8 slices
Calories: 198kcal
Author: Katie from Heart’s Content Farmhouse
Did you make this recipe?Tag me @heartscontentfarmhouse so I can see!


key lime juice, sweetened condensed milk, graham crackers, on marble counter

For being such a simple dessert, there are many different ways to make key lime pie. The essentials are just sweetened condensed milk and lime juice. This recipe relies on bottled key lime juice, which is available year round and requires no tedious squeezing. It is topped with a simple and optional meringue.

There are two important thing to remember when making key lime pie: key lime juice, and time.

You can’t use regular limes. You just can’t do it. If you can find key limes at the grocery store, you can certainly use them. But they are expensive, small, and super tedious to juice.

Bottled key lime juice is readily available in the cocktail section of the grocery store, less than four dollars per bottle, and there is absolutely no difference in taste from juicing fresh. It makes this dessert very inexpensive to make, which is very satisfying when you consider that a purchased pie w be between fifteen to twenty dollars.

Using key lime juice means that your filling will be more yellow than green. That’s okay! It just means you’ve made key lime pie the right way. If it bothers you, you can add a tad of green food coloring, but it is better to not and instead teach people that key lime pie should not be green.

Be Patient!

slice of key lime pie with bite missing

The second important element is time. You will make a graham cracker crust, the lime filling, and the meringue topping. None of the steps are particularly time-consuming, but everything needs a lot of time to chill, just like a mixed berry pie. Once the components are chilled, they are assembled and baked, and then the pie must be chilled for another 12 hours. So it’s best to make this the day before you need it.

But this pie is easy, inexpensive, and delicious. I hope you love it!

signature with strawberries

By on April 1st, 2019

8 thoughts on “Meringue Topped Key Lime Pie”

  1. Yum, someone just brought key lime cheesecake to our study last night, it was pretty good, but I love the real deal! Will have to try this!


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