Authentic Key Lime Pie – this easy recipe is the real deal! Simple graham cracker crust with a sweet, creamy citrusy filling.

white plate with slice of authentic key lime pie drizzled with raspberry sauce

Looking for an easy, authentic Key Lime Pie recipe? 

You’ve found it.  Citrusy, sweet and tart all in one bite, plus a lightly crisp graham cracker crust.

This easy recipe is gonna blow your mind.

white plate with slice of authentic key lime pie and fork inserted from the top

This delicious American dessert is perfect all year but especially in the summer.

Tart, sweet and loaded with fresh citrus flavor – it’s always a hit.

WHAT IS KEY LIME PIE?

Key Lime Pie is said to have originated in Key West.

Its simple graham cracker crust is filled with a creamy sweet-tart filling made with lime juice and sweetened condensed milk. 

Serve it up plain or top with whipped cream, meringue or my simple raspberry sauce (how-to below).

WHAT KIND OF LIMES ARE BEST FOR KEY LIME PIE?

I kid you not, this is the best Key Lime Pie, thanks to a secret ingredient that enhances the flavors. It whips up quickly and is a proven winner.

Key limes are best for authentic, classic flavor.

If you can’t find them in the grocery store (or don’t have time to juice them), Nellie and Joe’s Key Lime Juice is authentic and works just as well in this recipe.

It’s in pretty much any grocery store in the juice aisle.

WHAT’S IN AUTHENTIC KEY LIME PIE?

The crust:

NOTE: you can also use a pre-made 9″ graham cracker pie crust

  • graham cracker crumbs
  • sugar
  • butter

The filling:

  • sweetened condensed milk
  • key lime juice
  • lime zest
  • sour cream
  • vanilla

Optional pie toppings:

  • slivered almonds
  • whipped cream
  • meringue
  • raspberry jam (whatever brand is your favorite)

HOW TO MAKE THE BEST KEY LIME PIE:

Preheat the oven to 350 degrees.

The Crust:

Combine finely crushed graham cracker crumbs and sugar in a medium bowl then blend in the melted butter.

Press the mixture into the bottom and up the sides of a 9″ ungreased pie pan using the bottom of a 1/4 cup measuring cup then refrigerate while you make the filling.

The Filling:

To a medium bowl, add sweetened condensed milk, sour cream, lime juice and zest and vanilla.

Whisk until combined well then pour into the pie shell.

Bake 8-10 minutes or until small bubbles begin to form and it is still slightly jiggly with a light shake (it’ll firm up when it cools).

Cool completely then refrigerate. Serve plain or with whippped cream, slivered almonds around the edges, a lime twist or raspberry sauce.

The raspberry sauce:

Add 1/2 cup of your favorite raspberry preserves to a small bowl then microwave 15-20 seconds or until the jam can be easily drizzled.

white plate with slice of authentic key lime pie drizzled with raspberry sauce

HOT TIPS AND FAQ:

Can I use ‘regular’ limes?

Yes, but you won’t have the same tangy lime flavor. Use fresh squeezed key limes or Nellie and Joe’s bottled key lime juice.

Does Key Lime Pie need to be refrigerated?

Yes – refrigerate to allow the pie to set up and for safe food handling. It also just tastes better chilled!

How long does Key Lime Pie last in the fridge?

Key Lime Pie will last in the fridge up to 3 days.

Can I freeze Key Lime Pie?

Yes! Cool completely then transfer to an airtight, freezer-safe container and store up to 2 months. Thaw in the fridge then eat.

LOOKING FOR MORE EASY DESSERT RECIPES?

Blueberry Peach Cobbler

S’Mores Cookies

Ice Cream Cake

Mixed Berry Galette

Skillet Berry Crisp (grill OR oven bake)

Air Fryer ‘fried’ Oreos

Enjoy!

pinterest pin showing authentic key lime pie drizzled with raspberry sauce

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white plate with slice of authentic key lime pie drizzled with raspberry sauce

Authentic Key Lime Pie

A Gouda Life
The real deal! Easy recipe for authentic Key Lime Pie! Graham cracker crust with a sweet, creamy citrusy filling.
5 from 3 votes
Prep Time 15 minutes
Cook Time 10 minutes
Course Dessert
Cuisine American
Servings 6
Calories

Equipment

  • 9" pie pan

Ingredients
  

Crust:

  • 1 1/2 cups graham cracker crumbs finely crushed
  • 3 tablespoons granulated sugar
  • 1/3 cup butter melted

Filling:

  • 2 14 ounce cans sweetened condensed milk
  • 3/4 cup sour cream full fat
  • 3/4 cup lime juice fresh squeezes
  • 1 tablespoon lime zest
  • 1 teaspoon vanilla

Optional toppings:

  • 1/4 cup slivered almonds
  • 1/2 cup your favorite raspberry preserves for raspberry sauce
  • whipped cream

Instructions
 

  • Preheat the oven to 350 degrees.
  • Combine the graham cracker crumbs and sugar in a medium bowl. Fold in the butter and blend well. Press into the bottom and up the sides of a 9" pie pan (ungreased).
  • Refrigerate the pie shell while you blend the filling.
  • Blend the sweetened condensed milk, sour cream, lime juice and zest and vanilla by hand.
  • Pour into the prepared pie shell and bake for 8-10 minutes or until small bubbles begin to form (don't overbake!).
  • Remove the pie from the oven. Cool completely then refrigerate several hours (or overnight) before serving.
  • Top with whipped cream and slivered almonds. To make the raspberry sauce, add 1/2 cup to a small bowl. Microwave 15-20 seconds or until it's warmed. Drizzle the sauce over each slice when served.

Nutrition

Serving: 0gCarbohydrates: 0gProtein: 0gFat: 0gSaturated Fat: 0gPolyunsaturated Fat: 0gMonounsaturated Fat: 0gTrans Fat: 0gCholesterol: 0mgSodium: 0mgPotassium: 0mgFiber: 0gSugar: 0gVitamin A: 0IUVitamin C: 0mgCalcium: 0mgIron: 0mg
Keyword authentic key lime pie, best key lime pie, easy key lime pie, key lime pie
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7 Comments

  1. Goodness Gracious Gert – what a pie! Your filling looks so “velvety” smooth. Love the secret ingredient addition. Pinned. Can’t wait to make this. Thanks for sharing this recipe. Have a good week!

    1. Hey Christa! 🙂 Thanks so much — haha — it’s always the right time for pie — especially Key Lime. Have a great day — Bernie