Lightly coat a 7×3-inch springform pan with nonstick spray and set it aside.: The pan will feel cool and slightly slick from the spray, which helps release the cake later. Make sure the spray reaches the sides so the crust does not stick, otherwise the cheesecake can tear when you remove the ring. A common error is forgetting to protect the bottom edge, which can make the crust cling to the pan when you try to unlatch it.
Add all the crust ingredients to a large bowl and stir until well combined.: As you mix the graham cracker crumbs , sugar , cinnamon , and melted butter , notice the aroma change from dry crumbs to a warm, toasty scent. The mixture should feel evenly moistened and hold together when pinched. If it feels too dry, add a tiny extra splash of butter. Avoid overmixing, which can make the crust greasy.
Press the mixture into the prepared springform pan. Press the crust and try to line the sides to the middle of the pan edges.: Use the heel of your hand or a measuring cup to press the crumbs down firmly. The surface should be compact and slightly glossy from the butter. Proper pressing prevents a crumbly base and gives clean slices. A common mistake is pressing unevenly, which leads to thin spots that collapse later.
Freeze for at least 20 minutes.: The cold crust will firm up and hold shape when the filling is added. You will feel a chill if you touch the pan, and the crumbs will sound more compact when tapped. Skipping this step can make the crust shift during cooking, causing a soggy bottom.
Using a hand mixer, beat the cream cheese in a large bowl until light and fluffy at low to medium speed.: Beat cream cheese until it becomes smooth and slightly aerated, with no visible lumps. The texture should be satin like, and the sound of the mixer will become more even as it softens. Overbeating at this stage can incorporate too much air and cause the cheesecake to crack.
Add the sugar and cornstarch and continue beating until well combined. Scrape the sides and bottom of the bowl.: When you add sugar and cornstarch , the mixture turns glossy and holds together. Scraping prevents pockets of unmixed ingredients. If you skip scraping, you might get flecks of cornstarch that don’t dissolve, affecting texture.
Add the eggs one at a time and beat after each addition until well combined.: Each egg should disappear into the batter smoothly, making the mixture fuller and slightly looser. Watch for the batter to remain cohesive; if it becomes frothy, you are overmixing. Overbeaten eggs introduce air and can lead to cracking during cooking.
Add heavy cream, sour cream, vanilla extract, lime juice, and lime zest. Beat until just combined.: The batter will become silkier and pourable as you add heavy cream and sour cream , with a fresh citrus scent from the zest and juice. Mix only until blended to preserve smoothness. Be careful not to overmix, which changes texture and can incorporate air that causes structural issues.
Remove the crust from the freezer and pour the cheesecake batter mixture into the prepared pan. Cover the top with foil.: Pouring the batter should feel thick but flowing, and the surface should level with a slight wobble when nudged. Tenting the top with foil prevents condensation and protects the cake from direct steam. If you skip foil, the top may get wet or pockmarked from steam.
Place metal trivet into a 6-qt Instant Pot and add 1 1/2 cups water.: The water should look clear and calm, and placing the trivet properly creates a stable platform. This steam environment cooks the cheesecake gently. Don’t use too little water, or the pot might overheat and interrupt cooking.
Gently transfer the cheesecake pan to the top of the trivet.: Move slowly so the batter stays centered, and the pan should sit steadily on the trivet. A steady placement prevents sloshing and uneven cooking. If the pan tips, the batter can leak and the cake will set unevenly.
Select the manual setting and adjust the pressure to high. Set the time to 35 minutes.: As the Instant Pot ramps up, you’ll hear the familiar hum and occasional clicks. High pressure ensures even, gentle heat that sets the cheesecake without drying the top. Avoid opening the pot during the cycle, which interrupts the temperature and can cause the center to sink.
After cooking and the Instant Pot beeps, release pressure naturally for about 20-30 minutes.: During the natural release, the cake continues to set and the surface calms. You’ll notice the pot quieting and the pressure indicator falling. Forcing a quick release can shock the cake, causing cracks or a collapsed center.
Carefully open the pot and transfer the cheesecake to a cooling rack. Let it cool for 1 hour, then run a paring knife around the edges.: The aroma at this point is creamy citrus perfume. Cooling on a rack allows even temperature drop, and running a knife around the edge prevents the cake from sticking to the pan as it contracts. If you skip the knife step, the top may cling and tear when you remove the ring.
Transfer the cheesecake to the refrigerator for at least 6 hours or overnight.: Chilling lets the texture firm and the flavors meld. The cake should feel set and slice cleanly after chilling. Cutting too soon results in a loose center and messy slices.
Garnish with whipped cream and lemon slices before serving.: The final touch adds contrast, with airy whipped cream and bright Meyer lemon notes. Arrange slices thinly for elegance. Overloading the top with heavy garnishes can hide the cake’s beautiful texture and flavor balance.