Key Lime Pie Recipe
Homemade key lime pie recipe with dreamy smooth filling starts with a crisp graham cracker crust and a 3–4 ingredient lime custard that takes just minutes to whisk together. Key lime juice brings bright, citrusy tartness, while sweetened condensed milk and egg yolks create a rich, velvety texture that sets beautifully in the oven.
Once cooled and chilled, the pie is topped with soft whipped cream and a sprinkle of lime zest for a bakery-worthy finish that’s surprisingly easy to pull off at home. It’s a refreshing dessert for warm days, holidays, or any time you want a citrus-forward showstopper.
Table of Contents
Table of Contents
Key Lime Pie Recipe
Equipment
- 1 9-inch pie dish For baking the crust and pie.
- 2 Mixing bowls One for the crust and one for the filling.
- 1 Whisk To mix the custard filling until smooth.
- 1 Measuring cups and spoons For accurately measuring crust and filling ingredients.
Ingredients
Graham Cracker Crust
- 1.5 cups graham cracker crumbs Finely crushed.
- 3 tablespoons granulated sugar
- 5 tablespoons unsalted butter, melted
Key Lime Filling
- 14 ounce can sweetened condensed milk Full-fat.
- 4 egg yolks Large.
- 0.5 cups key lime juice Freshly squeezed or bottled.
- 1 tablespoons lime zest Finely grated.
Whipped Cream Topping
- 1 cups heavy cream, cold
- 2 tablespoons powdered sugar Adjust to taste.
- extra lime zest or thin lime slices (for garnish) Optional.
Instructions
How to Make Key Lime Pie with Dreamy Smooth Filling
- Step 1: Preheat the oven to 350°F (175°C). In a bowl, combine the graham cracker crumbs, granulated sugar, and melted butter. Stir until the crumbs are evenly moistened.
- Step 2: Press the crumb mixture firmly into the bottom and up the sides of a 9-inch pie dish. Bake the crust for 8–10 minutes, until lightly golden and set. Remove from the oven and let cool slightly while you prepare the filling.
- Step 3: In a separate bowl, whisk together the sweetened condensed milk and egg yolks until smooth and slightly thickened. Add the key lime juice and lime zest, whisking until the filling is fully combined and creamy.
- Step 4: Pour the lime filling into the warm crust and smooth the top. Bake for 15–20 minutes, or until the edges are set and the center is just slightly jiggly.
- Step 5: Transfer the pie to a wire rack and let cool to room temperature. Once cooled, cover and refrigerate for at least 3 hours, or until fully chilled and set.
- Step 6: Just before serving, whip the cold heavy cream with the powdered sugar until soft to medium peaks form. Spread or pipe the whipped cream over the chilled pie and garnish with extra lime zest or thin lime slices. Slice and serve cold.
Why You’ll Love This Key Lime Pie Recipe
- Classic graham cracker crust plus creamy, tangy lime filling.
- Dreamy smooth custard made from just a handful of ingredients.
- Easy bake-and-chill dessert you can make ahead.
- Beautiful with whipped cream and lime zest on top.
- Keeps well in the fridge and even freezes nicely.
Recipe Snapshot
| Recipe Snapshot | |
|---|---|
| Category | Dessert / Pie |
| Cuisine | American (Key West–inspired) |
| Prep Time | 20 minutes |
| Cook Time | 20–25 minutes |
| Total Time | 40–45 minutes + chilling |
| Dietary | Vegetarian (contains eggs, dairy) |
| Serves | 8 |
| Best Served | Well chilled with whipped cream |
Ingredients for Key Lime Pie Recipe
- Graham cracker crumbs: Form the buttery, crunchy base that contrasts the smooth filling.
- Sugar: Lightly sweetens the crust and helps it crisp.
- Melted butter: Binds the crumbs into a press-in crust.
- Sweetened condensed milk: Adds sweetness and creamy body to the filling.
- Egg yolks: Thicken the filling into a silky custard when baked.
- Key lime juice: Provides that signature tart, floral lime flavor; bottled key lime juice works if fresh isn’t available.
- Lime zest: Intensifies lime aroma and flavor in the filling and as garnish.
- Heavy cream + powdered sugar (for topping): Whipped into soft peaks for a dreamy, light topping.
How to Make the Key Lime Pie Recipe
Step 1: Make the crust
Stir graham cracker crumbs, sugar, and melted butter together until evenly moistened, then press firmly into the bottom and up the sides of a pie dish. Bake briefly until lightly golden and set, then let cool slightly.
Step 2: Mix the filling
In a bowl, whisk sweetened condensed milk and egg yolks until smooth and slightly thickened, then whisk in key lime juice and lime zest until creamy and cohesive.
Step 3: Bake the pie
Pour the filling into the warm crust and bake until the edges are set and the center is just slightly jiggly, about 15–20 minutes.
Step 4: Cool and chill
Cool the pie to room temperature on a rack, then cover and refrigerate for at least 3 hours (or overnight) until fully set and chilled.
Step 5: Whip the cream and garnish
Beat cold heavy cream with powdered sugar until soft to medium peaks form, then spread or pipe over the chilled pie and garnish with extra lime zest or thin lime slices.
Pro Tips of Key Lime Pie Recipe
- Use finely crushed crumbs and press them firmly for a crust that slices cleanly.
- Don’t overbake; the center should still have a slight wobble and will finish setting as it cools.
- Chill thoroughly—key lime pie tastes best after several hours or overnight in the fridge.
- For the smoothest filling, whisk until completely lump‑free before baking.
- Add zest sparingly; a little goes a long way for flavor and can turn bitter if overdone.
How to Serve Key Lime Pie Recipe
- Slice cold and top each piece with a dollop or swirl of whipped cream.
- Garnish with lime zest or thin lime wedges for a bright, fresh look.
- Serve after a light meal as a refreshing, citrusy dessert.
- Pair with coffee or tea to balance the sweet-tart flavors.
- Present on a cake stand or platter for holidays and gatherings.
Make Ahead and Storage
Storing Leftovers
- Always store key lime pie covered in the refrigerator once cooled and set.
- In the fridge, it usually keeps well for about 3–5 days (some sources say up to a week).
- Keep it tightly covered to prevent absorbing fridge odors.
Freezing
- Cool the pie completely, then freeze uncovered until firm before wrapping well in plastic and foil.
- For best quality, enjoy frozen key lime pie within 1–3 months; some producers say up to 6 months.
- Thaw in the refrigerator and serve chilled; some people enjoy it slightly frozen for an ice‑cream‑like texture.
Reheating
- Key lime pie is a chilled dessert and should not be reheated; serve cold straight from the fridge.
- If frozen, thaw in the fridge rather than at room temperature for food safety and best texture.
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FAQs
Can I use regular limes instead of key limes?
Does key lime pie need to be refrigerated?
How do I know when the filling is done baking?
Can I make key lime pie ahead of time?
Absolutely—it’s ideal to make a day ahead so it has time to fully chill and the flavors meld.