Key Lime Pie Cheesecake
I made this cheesecake for the first time on a whim three summers ago, mostly because I had a bag of limes going soft on my counter and didn’t want to waste them. I figured I’d just do a regular key lime pie. Then I got distracted scrolling through old recipe cards and thought, why not combine it with cheesecake instead. That “why not” turned into one of the most requested desserts I make every summer now, and honestly, it’s stuck around longer than half the recipes I’ve actually planned out in advance.
This one lands right in that sweet spot between a classic key lime pie and a rich New York style cheesecake. You get the tang, the creamy texture, and a graham cracker crust that holds everything together. It’s not overly sweet, which I appreciate, because a lot of key lime desserts go too far in one direction or the other.
Why You’ll Love This Recipe
It’s the kind of dessert that looks like it took a lot more effort than it actually did. The crust comes together in one bowl. The filling is basically dump and mix. And the lime flavor is bright enough that people notice it immediately without you having to explain what’s in it.
It also holds up well in the fridge for days, which makes it a solid make ahead option for parties, potlucks, or just having something good around the house when you don’t want to bake again for a while.
What Makes This Recipe Unique
Most key lime pie recipes skip the cream cheese entirely, and most cheesecake recipes skip the lime juice intensity that key lime pie is known for. This recipe pulls both into one filling. I use a higher ratio of lime juice than a standard cheesecake would call for, balanced out with full fat cream cheese and sour cream so the tartness doesn’t overwhelm the texture.
I also bake it in a water bath, which I know some people skip, but it really does make a difference in how smooth the top turns out. If you’ve ever pulled a cheesecake out of the oven and watched the top crack like a desert floor, the water bath is usually the fix.
Key Features
- Graham cracker crust with a hint of lime zest baked right in
- Tangy, creamy filling using real key lime juice (bottled works too)
- Smooth baked texture from the water bath method
- Make ahead friendly, tastes even better the next day
- Topped with lightly sweetened whipped cream and lime zest
Recipe Info
| Detail | Time/Amount |
|---|---|
| Prep Time | 30 minutes |
| Cook Time | 55 minutes |
| Chill Time | 6 hours (overnight recommended) |
| Total Time | 7 hours 25 minutes |
| Servings | 10 slices |
| Yield | One 9-inch cheesecake |
Essential Ingredients
For the crust:
- 1 ¾ cups graham cracker crumbs (about 14 full sheets)
- 5 tablespoons unsalted butter, melted
- 2 tablespoons granulated sugar
- 1 teaspoon lime zest
For the filling:
- 24 oz full fat cream cheese, softened to room temperature
- 1 cup granulated sugar
- 3 large eggs, room temperature
- ½ cup sour cream
- â…” cup key lime juice (bottled key lime juice works well if fresh limes aren’t available)
- 1 tablespoon lime zest
- 1 teaspoon vanilla extract
- 2 tablespoons all-purpose flour
For the topping:
- 1 cup heavy whipping cream
- 2 tablespoons powdered sugar
- Extra lime zest for garnish
- Thin lime slices, optional
A good stand mixer makes the filling step go a lot faster and gives you a smoother result than mixing by hand, especially when you’re trying to avoid overbeating the eggs into the batter. If you don’t have one, a hand mixer works fine too, just go slow.
Alternative Ingredients
If you can’t find key limes or key lime juice, regular lime juice works as a substitute, though the flavor will be slightly less floral and a touch more sharp. You can balance that out by adding a bit more zest.
For a lighter version, swap the full fat cream cheese for a reduced fat variety, though the texture will be a little less rich and may take slightly longer to set. Greek yogurt can replace the sour cream in a pinch, and it actually adds a nice tang of its own.
If you’re avoiding graham crackers, crushed digestive biscuits or vanilla wafer cookies make a solid crust substitute.
Step-by-Step Directions
1. Make the crust. Preheat your oven to 325°F. Combine the graham cracker crumbs, melted butter, sugar, and lime zest in a bowl until it resembles wet sand. Press firmly into the bottom of a 9-inch springform pan, going slightly up the sides. Bake for 8 minutes, then set aside to cool while you make the filling.
2. Beat the cream cheese. In a large bowl or stand mixer, beat the softened cream cheese on medium speed until completely smooth, about 2 minutes. Scrape down the sides of the bowl, this step matters more than people think, because any leftover lumps will show up in your final texture.
3. Add the sugar. Mix in the sugar gradually until fully incorporated and the mixture looks light and fluffy.
4. Add the eggs. Add the eggs one at a time, mixing on low speed just until each one is incorporated. Overmixing at this stage introduces too much air, which can cause cracking later.
5. Mix in the wet ingredients. Add the sour cream, key lime juice, lime zest, and vanilla extract. Mix on low until just combined.
6. Add the flour. Sprinkle in the flour and mix briefly, just until no streaks remain.
7. Prepare the water bath. Wrap the outside of your springform pan tightly in two layers of heavy duty aluminum foil to prevent leaks. Pour the filling over the cooled crust, then place the pan inside a larger roasting pan. Pour hot water into the roasting pan until it reaches about halfway up the sides of the springform pan.
8. Bake. Bake at 325°F for 55 to 65 minutes, until the edges are set but the center still has a slight jiggle. It will continue to firm up as it cools.
9. Cool gradually. Turn off the oven and let the cheesecake sit inside with the door slightly cracked for about an hour. This slow cooling step helps prevent the top from cracking.
10. Chill. Remove from the water bath, cool completely on the counter, then refrigerate for at least 6 hours, though overnight is better.
11. Top and serve. Whip the heavy cream with powdered sugar until soft peaks form. Spread or pipe over the chilled cheesecake, then finish with extra lime zest and thin lime slices if you’d like.
Pro Tips
Room temperature ingredients are non-negotiable here. Cold cream cheese straight from the fridge will leave lumps no matter how long you beat it, and that shows up in the final slice.
If you don’t own a roasting pan large enough for a true water bath, a deep baking dish or even a large oven-safe skillet works as a substitute, as long as the springform pan fits inside with room around the edges.
A digital kitchen scale helps a lot when measuring the graham cracker crumbs and cream cheese precisely, especially if you’re trying to repeat the same result every time.
Let the cheesecake come to room temperature for about 20 minutes before slicing for the cleanest cuts, and run your knife under hot water between slices.
FAQs
Can I make this without a water bath? Yes, though you run a higher risk of cracking and uneven baking. If you skip it, keep a close eye on the bake time and pull it out as soon as the edges set.
Can I use regular limes instead of key limes? Yes, regular limes work fine. The flavor will be slightly less tart and floral compared to true key limes, but it’s a perfectly good substitute.
How long does this cheesecake keep in the fridge? Covered tightly, it keeps well for about 5 days. The flavor actually improves after the first day or two as the lime flavor settles into the filling.
Can I freeze this cheesecake? Yes, without the whipped cream topping. Wrap slices individually in plastic wrap, then foil, and freeze for up to 2 months. Thaw in the fridge overnight before serving.
Why did my cheesecake crack? Usually it’s from overmixing the eggs, baking at too high a temperature, or cooling too quickly. The water bath and slow cooling step in this recipe are designed to prevent that.
Nutrition Facts (per slice, approximate)
| Nutrient | Amount |
|---|---|
| Calories | 410 |
| Total Fat | 29g |
| Saturated Fat | 17g |
| Carbohydrates | 32g |
| Sugar | 24g |
| Protein | 7g |
| Sodium | 290mg |
Nutrition values are estimates and will vary based on specific ingredients and brands used.
You’ll Also Love
- Classic New York Style Cheesecake
- No-Bake Lemon Cheesecake
- Key Lime Pie Bars
- Strawberry Swirl Cheesecake
Conclusion
This cheesecake has become one of those recipes I come back to every time limes are in season, and it’s held up well even when I’ve made small substitutions along the way. The combination of tangy lime and rich cream cheese filling gives you something that feels familiar but still a little different from the desserts most people expect to see at a summer gathering. Give it a try, and don’t be afraid to adjust the lime amount slightly to match your own taste.
