First Step: Preheat the oven to 350 degrees Fahrenheit (177°C) and line the outside of a 9-inch springform pan with heavy-duty aluminum foil to keep water out during baking. In a mixing bowl, stir together 2 cups (230g) crushed graham cracker crumbs and 3 tablespoons (39g) sugar, then pour in 1/2 cup (113g) melted unsalted butter and mix until it’s nice and moist. Press this mixture evenly into the bottom and up the sides of the pan, about 1 inch high it takes just a few minutes. For gluten-free changes, swap in gluten-free crumbs here to keep the base solid for your key lime cheesecake.

Second Step: Bake the crust for 10 minutes, then set it aside to cool on a wire rack while you make the filling this gives it about 5-10 minutes to rest. Lower the oven temperature to 325 degrees Fahrenheit (163°C) and get 4 quarts of water boiling for the water bath. In a small bowl, whisk 1 cup plus 2 tablespoons (236g) granulated sugar with 1 tablespoon (8g) cornstarch until blended. In a large bowl, beat 3 packages (24 ounces or 680g total) of softened cream cheese with an electric mixer until it’s super smooth, then add the sugar mixture and blend well. If you’re going low-calorie, use a reduced-fat cream cheese option at this stage to lighten things up in the key lime cheesecake recipe.

Third Step: Add 4 large eggs, one at a time, to the cream cheese mixture, mixing just until combined after each and scraping the bowl sides to keep it even this avoids over-mixing and helps with that perfect texture. Stir in 2/3 cup (160g) sour cream or plain yogurt, 1/3 cup (80ml) heavy cream, 1/2 cup (120ml) fresh lime juice, 1 1/2 teaspoons vanilla extract, and 2 teaspoons lime zest until everything’s incorporated smoothly. Tap the bowl about 30 times to pop any air bubbles this step is key for a crack-free top on your key lime cheesecake. For vegan adaptations, sub in flax eggs or a dairy-free yogurt to maintain the creaminess without any fuss.

Fourth Step: Pour the filling over the cooled crust in the pan. Place the pan inside a larger roasting pan, then carefully pour the boiling water around it until it reaches halfway up the sides this water bath keeps things moist and prevents cracks. Pop it in the oven and bake for 60 to 70 minutes until the edges are set and the middle still jiggles a bit. If it’s browning too fast, cover with foil to even it out this key lime cheesecake bakes best with patience. Keep an eye on the time, and for low-calorie tweaks, use less sugar in the filling to control the sweetness.

Fifth Step: Turn off the oven and crack the door open slightly, letting the key lime cheesecake cool inside for 1 hour to avoid sudden changes that cause cracks. Take it out, let it cool fully on a wire rack for another hour, then cover and pop it in the fridge to chill for at least 4 to 9 hours, or overnight for the best results that’s when the flavors really shine! If you’re prepping for a crowd, this chilling time makes it easy to bake ahead while adapting for dietary needs like using plant-based options in the key lime cheesecake.

Sixth Step: Once chilled, run a knife around the pan edges to loosen the key lime cheesecake before removing the rim. Whip 1 cup (235ml) heavy cream with 2 1/2 tablespoons (33g) granulated sugar until stiff peaks form, which takes about 2-3 minutes with a mixer. For variations, you can make the topping ahead and store it this step adds that final flair to the key lime cheesecake recipe.

Final Step: Top your key lime cheesecake with the whipped cream and garnish with fresh raspberries, sliced strawberries, lime wedges, lime zest, and mint if you like. Slice it up for serving, and it’s ready to impress about 16 slices per key lime cheesecake. Pair it with coffee for a treat, and if you’ve made swaps like vegan ingredients, give it a taste to make sure it’s just right before digging in!