Friday, May 9, 2025 · 82 Comments

Key Lime Pie

This is the key lime pie I make when I want the filling to taste like key lime. It’s sharp, smooth, and hits the right level of creamy without losing that citrus bite.

It’s the kind of key lime pie that holds up from the first slice to the last

This key lime pie sets up like it means it. The filling’s thick but still smooth, with enough citrus to carry every bite without needing anything else to boost it. Once it’s chilled, it slices clean, holds together, and doesn’t slump on the plate.

There’s a full cup plus of key lime juice in here, plus a little lemon to keep the flavor sharp. The six yolks give it that dense, custardy texture I like – no wobble, no cracks, just a solid, creamy center.

I keep the whipped cream simple and cold, just enough to balance the filling without getting in the way. A few lime slices on top if I have them, but it doesn’t need much. The pie does all the work.

Why this pie holds its own

It’s not trying to be the tallest pie or the creamiest thing on the table. It just tastes right. The filling has real citrus punch, the texture stays smooth all the way through, and it slices like it’s supposed to – no sag, no mess.

Other versions fall apart, or go flat in the fridge. This one doesn’t. It sets clean, holds flavor, and keeps its shape without needing a pile of toppings to carry it. Nothing’s in here by accident.

Why I keep making this one

After all the tasting and testing, this is the one that holds.
The filling uses five ingredients and nails the citrus flavor.
Graham cracker crust, cold whipped cream, and nothing extra.

The ingredients that make this key lime pie work

It doesn’t take much—but it has to be right.

Graham crackers – I crush full sheets into fine crumbs for a crust that presses in tight and holds its shape after baking.
Butter – Melted and mixed into the crumbs so the crust sets up firm and stays together.
Granulated sugar – Used in both the crust and the filling. Just enough to balance the tart.
Key lime juice – I use bottled juice here – not all brands are the same, but I’ve got a favorite that works every time and lets me make this pie year-round.
Lemon juice – Just a splash to sharpen the flavor and keep it from going dull.
Egg yolks – All six matter. They thicken the filling and give it that smooth, custardy feel.
Sweetened condensed milk – The base of the filling. It adds sweetness and that creamy texture that sets up perfectly after chilling.
Heavy cream – Whipped cold for the topping. I wait to add it until the pie is fully chilled.
Confectioners’ sugar – Used to sweeten and steady the whipped cream so it holds its shape.
Vanilla extract – Just a little in the topping to mellow it out.
Lime zest and slices – Only if I have them. I add them for color or when I want the pie to feel more dressed up.

How I make key lime pie

Find the complete recipe with measurements in the recipe card at the bottom of the post.

Step One: (make the crust)
Crush up the graham crackers – either blitz them in a food processor or smash them in a bag with something heavy. Stir the crumbs with melted butter and sugar in a medium bowl until they feel like damp sand. Press that mixture into a 9-inch pie pan and pack it down tight using the back of a spoon or a measuring cup. You want it solid, not loose. Bake it at 350°F for 5 minutes, then let it cool while you move on.
Step Two: (mix the filling)
Drop the oven temp to 325°F. In a medium bowl, stir together the sweetened condensed milk, key lime juice, lemon juice, sugar, and egg yolks. Once it’s mostly blended, give it a good whisk until smooth and glossy.
Step Three: (bake the pie)
Pour the filling into your cooled crust and bake for 30–35 minutes. You’re looking for the edges to be set and the center to have just a slight jiggle – kind of like set Jell-O, not runny pudding.
Step Four: (chill out)
Let the pie cool on the counter for an hour, then move it to the fridge. Give it at least 5 hours to chill and firm up completely – overnight works great if you’re making it ahead.
Step Five: (make the whipped cream)
Pour the cream into a large mixing bowl and add the confectioners’ sugar and vanilla. Whip it with a hand mixer on medium-high speed until stiff peaks form. Should only take a minute or two.
Step Six: (decorate and serve)
Pipe or spoon the whipped cream around the edge of the chilled pie. Add a few lime slices or a sprinkle of zest on top if you’re feeling fancy. Slice it up and serve cold.

Recipe Tips

This pie’s not complicated, but a couple small things help it turn out just right.

Use a measuring cup to press in the crust so it stays tight and even.
Room temp egg yolks blend better and give the filling a smoother texture.
Whisk the filling until it’s glossy – just stirring won’t get it there.
If the center still has a little jiggle, pull it. That means it’s done.
Chill it for at least five hours, but overnight is best for clean slices.
Wait to top it until just before serving so the whipped cream stays fluffy.

Storing key lime leftovers

Here’s how to deal with the leftovers if you have any.

I keep leftovers chilled and covered in the fridge. The texture holds up for about 3 days.
If you want to freeze it, skip the whipped cream and wrap the pie (or slices) tightly in plastic and foil. It’ll keep for about a month.
Thaw in the fridge overnight, then add the topping just before serving.

Frequently asked questions

Can I use bottled juice or do I need fresh key limes?
You can use either, but for this particular recipe, I go with bottled. You need 1 1/4 cups of juice, which means squeezing around 40 to 50 key limes. I’ve done it before, but bottled is a lot easier and still gives the flavor I want. If you’ve got fresh key limes and the patience, it’ll work just fine.
Do I really need six yolks?
Yes. I’ve tested versions with less, and they just don’t set the same. The yolks give the filling that thick, custardy texture that makes this pie what it is.
Why is there lemon juice in a key lime pie?
It helps brighten the flavor. Key lime on its own can get a little muted when baked, so a small splash of lemon keeps it sharp.
How do you garnish it without overdoing it?
I pipe the whipped cream around the edge and stop there. A few lime slices or some zest if I have it, but this pie doesn’t need dressing up.
What if the center still jiggles when I pull it from the oven?
That’s exactly when you should pull it. It’ll finish setting as it cools. If it looks fully set in the oven, it’s already gone too far.

More ways to keep the key lime thing going

If you’re already in deep with the flavor, here are a few more recipes that don’t waste a single drop.

Key Lime Pie Cookies – Graham cracker crust, creamy middle.
Key Lime Bars – Tall custard filling, whipped cream.
Key Lime Pie Dip – Creamy, sweet, and weirdly perfect with graham crackers.
Key Lime Tart – Thicker crust, a little more edge.
Key Lime Cupcakes – Light, sharp, and topped with a frosting that actually tastes like lime.
Blueberry Key Lime Tart – Graham cracker crust with blueberry topping.

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Print Recipe

5 from 10 votes

Key Lime Pie

This key lime pie has a smooth, custardy filling with real citrus flavor, a graham cracker crust that slices clean, and a cold whipped cream topping. Simple, tart, and made to hold up.

Prep Time15

Cook Time40

Chilling5

Total Time5 55

Course: Dessert

Cuisine: American

Keyword: Key Lime Pie

Servings: to 10 slices

Calories: 462kcal

Author: Cathy Pollak

Equipment

measuring cups and spoons For accurate measuring.
mixing bowls For the crust, filling and whipped cream.
food processor or rolling pin. To crush the graham crackers.
pie plate 9" Hold the crust and filling at the right depth for slicing.
whisk Helps get the filling smooth and glossy.
hand mixer Whips the cream to stiff peaks.
piping bag (optional). For adding the whipped cream. You can also spoon it on.

Ingredients

Crust:

16 full sheets graham crackers
8 tbsps. butter melted
1/3 cup granulated sugar

Filling:

2 cups sweetened condensed milk
1-1/4 cups bottled key lime juice (while nothing compares to fresh, consider bottled for this recipe)
1/3 cup fresh lemon juice
1/3 cup granulated sugar
6 large egg yolks room temperature

Topping (optional):

1 cup heavy cream (very cold)
1/2 cup confectioners' sugar
1 tsp. vanilla extract
lime slices to garnish, regular or key limes
lime zest to garnish

Instructions

Preheat the oven to 350°F. In a food processor, pulse the graham crackers into fine crumbs (or crush them in a bag).
16 full sheets graham crackers
In a medium bowl, stir together the crumbs, melted butter, and sugar until it feels like damp sand. Press firmly into a 9-inch pie pan using a spoon or measuring cup.
8 tbsps. butter, 1/3 cup granulated sugar
Bake the crust for 5 minutes, then set aside to cool.
Lower oven temperature to 325°F. In a medium bowl, stir together the sweetened condensed milk, key lime juice, lemon juice, sugar, and egg yolks. Whisk until smooth and glossy.
2 cups sweetened condensed milk, 1-1/4 cups bottled key lime juice, 1/3 cup fresh lemon juice, 1/3 cup granulated sugar, 6 large egg yolks
Pour the filling into the cooled crust and bake for 35–45 minutes, or until the edges are set and the center still jiggles slightly.
Cool on the counter for 1 hour, then refrigerate for at least 5 hours, or overnight.
In a large bowl, whip the cream, confectioners’ sugar, and vanilla until stiff peaks form (1–2 minutes).
1 cup heavy cream , 1/2 cup confectioners' sugar, 1 tsp. vanilla extract
Pipe or spoon the whipped cream around the pie. Garnish with lime slices and zest, if using.
lime slices to garnish, regular or key limes, lime zest to garnish
Slice and serve cold.

Notes

You’ll need 1 1/4 cups of key lime juice for this recipe. I usually use bottled—it’s faster, more consistent, and easier than squeezing 40+ fresh key limes.
If you do decide to go the fresh ley limes route I’ve found that attempting to juice them with a traditional citrus juicer is nearly impossible. However, I’ve found a perfect solution—a potato ricer! Simply slice the tiny limes in half, load several halves into the ricer at once, and squeeze away. It’s so much easier this way.
Make sure your egg yolks are at room temperature so they blend smoothly and help the filling set properly.
Don’t wait for the center to look fully firm in the oven. If it jiggles slightly in the center, it’s done.
The whipped cream holds up well for a few hours, but I always add it right before serving.
If you want to freeze the pie, skip the topping and wrap it well. Thaw in the fridge and top just before serving.

For the best results when making this key lime pie, check out the full post. It includes extra notes, tips, and frequently asked questions that aren't listed in the recipe card — like how to make it dairy-free, gluten-free, or ideas for simple ingredient swaps.

Nutrition information is an estimate and will vary based on the brands and products you use.

© noblepig.com. All content and photographs are copyright protected. Sharing a link to this recipe is encouraged and appreciated, but copying and/or pasting the full recipe to social media or other websites is strictly prohibited.

Nutrition

Nutrition Facts

Key Lime Pie

Amount Per Serving (126 g)

Calories 462 Calories from Fat 179

% Daily Value*

Fat 19.9g31%

Saturated Fat 9.9g62%

Polyunsaturated Fat 2.1g

Monounsaturated Fat 5.1g

Cholesterol 156mg52%

Sodium 258mg11%

Potassium 317mg9%

Carbohydrates 64g21%

Fiber 1g4%

Sugar 52g58%

Protein 8g16%

Vitamin A 170IU3%

Vitamin C 5mg6%

Calcium 213mg21%

Iron 1mg6%

* Percent Daily Values are based on a 2000 calorie diet.

Have you made this Key Lime Pie? I’d love to hear how it turned out — leave a comment below and let me know.

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Comments

5 from 10 votes