Key Lime Pie with Condensed Milk (Traditional)

Creamy, tangy, and refreshingly smooth, this traditional Key Lime Pie with sweetened condensed milk has that perfect balance of citrus flavor and sweetness, all nestled in a buttery graham cracker crust.

This key lime pie recipe delivers a silky filling that sets up beautifully and tastes as good as it looks. It’s simple yet classic, and one you’ll want to make again and again for your Spring Dinners or for Pi Day. If you love bright, citrus desserts like my Zesty Lime Bars, then you’ll love this Key Lime Pie.

Whether you’re serving it for a holiday, like Easter dinner, Mother’s Day brunch, Memorial Day, July 4th, or Thanksgiving, or just a casual get-together like a spring or summer picnic, it’s always a crowd favorite.

Why You’ll Love This Key Lime Pie

• Classic, Homemade Flavor – Made from scratch with simple ingredients, this Florida style key lime pie has a creamy filling and a traditional, well-balanced key lime flavor.
• Smooth, Creamy Texture That Sets Beautifully – Because the filling is baked, it sets into a creamy custard-like texture that slices cleanly and holds its shape. If you enjoy smooth, creamy desserts like my Old Fashioned Custard Pie, you’ll love the texture of this pie.
• Easy To Make – Just mix and bake, and it comes together without any complicated steps.
• Well-Balanced Sweet and Tart Flavor – The flavor is bright and vibrant without being too sharp or overpowering.
• Perfect For Any Occasion – Great for a casual get-together, holiday, or anytime you want a refreshing dessert.

What Makes This a Traditional Key Lime Pie

Key lime pie with sweetened condensed milk originated in the Florida Keys and is known for its simple method and distinctive flavor. This recipe follows the classic method used in an authentic Florida key lime pie recipe with egg yolks, sweetened condensed milk, and key lime juice.

• Egg Yolk Based Filling – Gives the pie its structure and classic texture.
• Brief Bake – Helps the filling set so it slices cleanly.
• Key Lime Flavor – Brighter and more aromatic than regular limes.
• Sweetened Condensed Milk – Before refrigeration, fresh milk was rarely used in the Florida Keys, so they used sweetened condensed milk because it did not require refrigeration and the lime juice reacts to its thick texture to set the pie, even if unbaked.

Like other custard style pie, such as my Cranberry Custard Pie, this Southern key lime pie recipe uses simple ingredients and a brief bake to create that smooth, classic texture.

How To Make Key Lime Pie

1. Make the Crust: Preheat the oven to 350°F. In a bowl, mix the graham cracker crumbs, melted butter and sugar until combined.

2. Bake the Crust: Use a measuring cup to press the crumbs firmly into a 9-inch pie plate. Bake for 8-10 minutes, then cool slightly.

3. Prepare the Filling: In a mixing bowl, whisk egg yolks and sweetened condensed milk until slightly thickened and pale. Stir in key lime juice and lime zest until fully combined. The mixture will begin to thicken.

4. Bake the Pie: Pour the filling into the warm crust and smooth the top. Bake for 20-25 minutes until the center is set but still slightly jiggly.

5. Cool the Pie: Cool at room temperature for about 30 minutes, then refrigerate for at least 4 hours until fully chilled.

6. Make the Whipped Topping: In a bowl whip the heavy cream, powdered sugar, and vanilla until soft peaks form.

7. Garnish the Pie: Pipe the whipped cream on top of the key lime pie. Garnish with extra lime slices and lime zest.

8. Serve: Slice and serve the pie chilled.

Pro Tips For Success

• Use Fresh Key Lime Juice For The Best Flavor – It gives the pie that classic, bright key lime flavor. Bottled key lime juice works well if fresh isn’t available.
• Whisk The Eggs Well – For the best texture, ensure the whisked eggs are smooth and slightly thickened before adding the other ingredients.
• Don’t Over Bake – The center of the pie should have a slight jiggle when you remove it from the oven. It will continue to set as it cools.
• Let It Cool Before Refrigerating – Cooling at room temperature first helps the filling set properly and keeps moisture from building up on the top of the pie.
• Chill The Pie Long Enough For Clean Slices – Refrigerate the pie for at least 4 hours so it fully firms up and allows for clean slices.
• Use Fresh Lime Zest – It adds an extra layer of bright lime flavor that enhances the filling.
• Press The Crust Firmly – This helps the crust hold together when slicing.
• Whip The Cream to Soft Peaks – This keeps the topping light and smooth without becoming stiff.
• Slice With A Clean Sharp Knife – Wipe the knife between cuts helps to get those neat, clean slices.
• Serve Well Chilled – The pie tastes best cold when the filling is fully set, and the flavors are at their peak.

Variations

• Use Regular Limes Instead of Key Limes – Don’t have key limes, regular limes will work well. The flavor will be slightly different but still fresh and bright.
• Add Extra Lime Flavor – Increase the lime zest slightly if you prefer a stronger lime flavor.
• Mini Key Lime Pies – Use mini pie plates (4.5″ – 6″) and divide the pie crust and key lime pie filling evenly into smaller portions to create fun individual servings for gatherings.
• Key Lime Pie with Meringue – Instead of whipped cream, make a meringue topping for a more formal presentation. (Check out the homemade meringue topping in my Chocolate Meringue Pie recipe.)
• No-Bake Key Lime pie – This recipe is baked for a smooth, custard-like texture. A no-bake key lime pie uses a different method and will have a softer texture.
• Frozen Key Lime Pie – Freeze the pie after it has fully set for a firmer, sliceable texture that is especially refreshing in hot weather.
• Key Lime Pie Bars – Prepare the crust and filling in a square baking dish and cut into bars for easy serving.
• Coconut Key Lime Pie – Give the pie a subtle tropical coconut twist by adding a few tablespoons of shredded coconut to the graham cracker crust. For a hint of coconut in the filling, you can add a small amount of coconut extract (about 1/8 teaspoon) without overpowering the lime.

Serving Suggestions

This key lime pie is best served chilled, straight from the refrigerator, with a dollop of whipped cream and a few extra lime slices for garnish.

It’s the perfect light, refreshing dessert after a big meal, especially for Easter Dinner, Mother’s Day Brunch, or summer cookouts. The bright citrus flavor pairs beautifully with rich or savory dishes.

For a full spring or holiday spread, serve it along side your favorite comfort classics, like my Mexican Shrimp Salad and Honey Lime Fruit Salad, for a fresh, vibrant meal.

How To Store Key Lime Pie

• Refrigerate – Store the pie covered in the refrigerator for up to 4 days.
• Cover Tightly – Place the pie in an airtight container or cover with plastic wrap to keep it fresh and prevent it from absorbing other flavors.

More Recipes You’ll Love

If you love bright, fresh desserts like this key lime pie, here are a few more favorites that are perfect for spring and summer.

• Strawberry Crumb Bars – Buttery, sweet, and filled with juicy strawberries, these are always a hit for weekend brunch and gatherings of friends and family.
• Blueberry Cheesecake Ice Cream – Creamy, fruity, and no-churn, this one is perfect for hot days when you want something cold and refreshing.
• Lemon Blueberry Coffee Cake – A soft, tender cake bursting with lemon and blueberries, and covered with a buttery crumb topping.
• Sopapilla Cheesecake Bars – One of my most popular desserts, with layers of flaky pastry, creamy cheesecake, and cinnamon sugar.
• Mexican Wedding Cookies – A classic, buttery cookie that perfect for parties, gatherings and gifting.

Looking for more? Feel free to browse all of my Easy Dessert Recipes.