Key Lime Cheesecake
A silky, tangy cheesecake bursting with fresh key lime flavor nestled in a buttery graham cracker crust.
Imagine slicing into a perfectly chilled cheesecake and getting hit with that bright, citrusy aroma of fresh key limes. The filling is impossibly smooth, with just the right balance of tart and sweet, and the golden graham cracker crust gives every bite a satisfying crunch. This Key Lime Cheesecake is the kind of dessert that makes people stop mid-conversation to ask for the recipe.
This is the dessert you bring to a summer cookout, a birthday dinner, or any occasion where you want to genuinely impress without spending all day in the kitchen. It comes together with simple ingredients, but the result looks and tastes like something from a proper bakery. The overnight chill time does most of the heavy lifting, so you can make it ahead and walk into your gathering completely stress-free.
Key lime pie has always had a special place in my heart, but the first time I swirled that same zippy citrus flavor into a creamy cheesecake filling, I never looked back. It has the nostalgic soul of a Florida classic with the rich, indulgent texture of a New York-style cheesecake. Once you try this combination, plain cheesecake is just going to feel a little incomplete.
Recipe at a Glance
Ingredients
Graham Cracker Crust
Key Lime Cheesecake Filling
Whipped Cream Topping
Substitutions & Variations
Step-by-Step Instructions
Prep Your Pan and Oven
Preheat your oven to 325 degrees Fahrenheit. Grease the bottom and sides of a 9-inch springform pan with butter or nonstick spray, then line the bottom with a circle of parchment paper. This makes it much easier to remove the cheesecake cleanly after it has chilled. Set the pan on a large sheet of heavy-duty aluminum foil and wrap the foil tightly up the outside of the pan, covering the bottom and coming at least halfway up the sides. This will protect the crust from water during the water bath bake.
Make the Graham Cracker Crust
In a medium bowl, stir together the graham cracker crumbs, granulated sugar, and cinnamon until evenly combined. Pour in the melted butter and mix with a fork until every crumb is moistened and the mixture feels like wet sand. Transfer it to the prepared springform pan and press it firmly and evenly across the bottom and about 1 inch up the sides. Use the flat bottom of a measuring cup to really pack it down so it holds its shape when sliced. Bake the crust for 10 minutes until it smells toasty and feels set, then set it aside to cool while you make the filling.
Zest and Juice Your Limes
Before cutting your key limes, zest them first since it is much easier to zest a whole lime than a cut one. You will need about 2 tablespoons of zest, which is the fragrant, flavorful outer layer of the peel. Roll each lime firmly on the counter with your palm before cutting to help release more juice. Squeeze or press out 1/2 cup of fresh juice and strain out any seeds. Bottled key lime juice can be used in a pinch, but fresh really makes a difference in brightness and aroma.
Beat the Cream Cheese
In a large bowl using a hand mixer or stand mixer fitted with the paddle attachment, beat the room-temperature cream cheese on medium speed for about 3 minutes until it is completely smooth and fluffy with no lumps at all. Scrape down the bowl and beaters well. Starting with soft cream cheese is the single most important step for a silky, crack-free cheesecake, so do not skip letting it come to room temperature for at least an hour before you begin.
Add Sugar and Flour
Add the granulated sugar and flour to the beaten cream cheese and mix on medium speed for another 2 minutes, scraping the bowl at least once. The flour acts as a light stabilizer that helps the cheesecake set up cleanly and reduces the risk of cracking. The mixture should look thick, smooth, and slightly glossy at this point.
Mix In the Eggs
Add the eggs and the extra yolk one at a time, mixing on low speed after each addition just until the yellow disappears into the batter. Overmixing the eggs is the most common cause of cheesecake cracks because it whips in too much air. Be patient and keep the speed low here. Scrape the sides and bottom of the bowl between each egg to make sure everything is evenly incorporated.
Finish the Filling
Add the sour cream, key lime juice, key lime zest, and vanilla extract. Mix on low speed until everything is just combined and the batter is uniform in color and texture. Take a moment to scrape the very bottom of the bowl with a spatula since cream cheese likes to hide down there. The finished batter should be pale yellow, glossy, and smell wonderfully citrusy.
Bake in a Water Bath
Pour the filling over the cooled crust and smooth the top with an offset spatula. Place the foil-wrapped springform pan inside a large roasting pan and carefully pour hot water into the roasting pan until it reaches about 1 inch up the sides of the springform. The steam from the water bath creates a gentle, even heat that helps the cheesecake bake smoothly and prevents the top from drying out and cracking. Carefully transfer the whole setup to the center rack of your oven and bake for 60 to 70 minutes.
Check for Doneness
The cheesecake is done when the edges are set and slightly puffed but the center 2 to 3 inches still have a gentle jiggle when you nudge the pan. It should look like a barely-set gelatin rather than a liquid slosh. Do not be tempted to overbake it trying to firm up the center because it will continue to set as it cools. An overbaked cheesecake turns grainy and is prone to cracking.
Cool Slowly
Turn off the oven and crack the door open about an inch. Let the cheesecake sit in the cooling oven for 1 full hour. This gradual temperature drop prevents the top from sinking or cracking due to a sudden temperature shock. After an hour, remove it from the water bath, peel off the foil, and let it cool completely on a wire rack at room temperature for another hour before moving it to the refrigerator.
Chill Overnight
Once the cheesecake is at room temperature, cover the pan loosely with plastic wrap and refrigerate for at least 8 hours, but overnight is truly best. This rest time allows the filling to firm up fully and lets the flavors deepen and meld together. Trying to slice it too early will give you a soft, messy result that does not hold its shape on the plate.
Top and Serve
When you are ready to serve, run a thin knife around the inside edge of the springform ring before releasing it to ensure a clean side. In a chilled bowl, beat the cold heavy cream, powdered sugar, and vanilla on medium-high speed until stiff peaks form. Pipe or dollop the whipped cream around the top edge of the cheesecake. Garnish with thin key lime slices and a little extra zest for a fresh, gorgeous finish. Slice with a warm, dry knife for the cleanest cuts.
Pro Baker Tips
Storage & Serving Notes
Serving Suggestions
This cheesecake is stunning on its own, but a few thoughtful finishing touches can make it truly unforgettable.
Frequently Asked Questions
Go Make It!
There is something so satisfying about setting a homemade cheesecake on the table and watching everyone's eyes light up. This Key Lime Cheesecake brings together everything you love about a creamy, indulgent dessert and ties it together with the bright, sunny flavor of fresh citrus. Whether you are making it for a special celebration or just because you deserve something truly delicious on a Tuesday, this recipe is going to become a regular in your rotation. Give it a try, take your time with the chill, and get ready for some very enthusiastic compliments.