Let’s be honest—most key lime desserts out there are either way too sweet or so aggressively tart that they make your mouth pucker. I’ve spent a ridiculous amount of time tweaking this recipe in my own kitchen because I wanted a dessert that hit the exact middle ground. After plenty of trial and error, a few sunk crusts, and a lot of taste-testing, I finally nailed what I confidently call the Best Key Lime Cheesecake.
It brings together the classic, buttery crunch of a thick graham cracker crust with a filling that is ridiculously smooth. I added a touch of cornstarch to my batter—a little trick I learned that guarantees the center sets up perfectly every single time, so you get those clean, bakery-style slices without the dreaded soggy middle.
Here is exactly how to make my favorite weekend dessert.
Best Key Lime Cheesecake
Ingredients to make this Best Key Lime Cheesecake
For my buttery crust:
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1 ½ cups graham cracker crumbs
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6 tablespoons butter, melted (I usually use unsalted)
For the tangy filling:
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24 ounces cream cheese, strictly softened to room temperature
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1 cup white sugar
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1 tablespoon grated lime zest (do this before you juice the limes!)
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1 tablespoon cornstarch
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3 large eggs, room temperature
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⅔ cup key lime juice
Lime
Lime zest
Graham crackers
Egg
Directions
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Get set up: Preheat your oven to 325°F (165°C). Grab a 9-inch springform pan and give it a light spray of oil or a rub of butter so nothing sticks.
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Make the crust: Toss your graham cracker crumbs and melted butter into a bowl. Stir it up until it feels like wet sand. Press this mixture firmly into the bottom of your pan and push it just a little bit up the sides. Pop it in the oven for 10 minutes to set, then pull it out to cool off.
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Whip the cream cheese: In a big mixing bowl, beat your softened cream cheese and sugar together. You want this completely smooth and fluffy. Stop and scrape down the sides of the bowl with a spatula—nobody wants lumpy cheesecake!
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Flavor and thicken: Toss in your lime zest and the cornstarch, mixing just until they disappear into the batter.
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Add the eggs carefully: This is where you need to be gentle. Mix your eggs in one at a time on low speed. The exact moment the yellow yolk streaks vanish, stop mixing. Beating too much air into the eggs right now is the main reason cheesecakes puff up and crack later.
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Stir in the juice: Pour in the key lime juice and give it a gentle stir by hand until the batter is silky. Pour everything right over your cooled graham cracker crust.
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The bake: Put it in the oven for 50 to 60 minutes. You’ll know it’s done when the edges are firm but the very center still has a slight wobble to it if you gently shake the pan.
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The cool-down trick: Turn your oven off completely. Crack the door open about an inch and just leave the cheesecake sitting in there for an hour. This slow temperature drop is my ultimate trick to avoid a cracked top.
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Chill out: Take it out of the oven and let it reach room temperature on the counter. Then, cover it up tight and stick it in the fridge for at least 4 hours. Honestly, overnight is even better if you have the patience.
Time Breakdown
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Prep Time: 20 minutes (mostly just crushing graham crackers!)
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Cook Time: 55 minutes
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Chilling Time: 4 to 6 hours
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Total Time: About 5 hours 15 minutes
Nutrition Information
(Estimates per serving, assuming you cut 12 slices)
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Calories: 415 kcal
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Carbohydrates: 32g
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Protein: 6g
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Fat: 30g
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Saturated Fat: 17g
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Sodium: 285mg
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Sugar: 24g
FAQ
Can I use regular limes instead of key limes? Yes! Even though key limes have a distinct, slightly floral aroma, regular Persian limes from the grocery store work totally fine. You’ll still end up with an incredible dessert. I’ve even used bottled juice in a pinch to make the Best Key Lime Cheesecake when fresh ones were out of season or too expensive.
How do I make sure my cheesecake doesn’t crack? I swear by three simple rules for a crack-free top: let your cream cheese and eggs sit out until they are truly room temperature before you start, keep your mixer on low when adding the eggs, and definitely do the slow-cooling method in the turned-off oven.
Is this freezer-friendly? It sure is. Once it’s completely chilled from the fridge, wrap the whole cake (or whatever slices you have left) tightly in plastic wrap, and then cover it with aluminum foil. Keep it in the freezer for up to 3 months. Just let it thaw in the fridge overnight when you’re ready to eat what I genuinely think is the Best Key Lime Cheesecake.
Source: www.allrecipes.com
