Lemon Cheesecake

1. FOR THE CRUST: Adjust oven rack to lower-middle position and heat oven to 325 degrees. Process cookies in food processor to fine crumbs, about 30 seconds (you should have about 1 cup). Add sugar and pulse 2 or 3 times to incorporate. Add melted butter in slow, steady stream while pulsing; pulse until mixture is evenly moistened and resembles wet sand, about 10 pulses. Empty crumbs into 9-inch springform pan and, using bottom of ramekin or dry measuring cup, press crumbs firmly and evenly into pan bottom, keeping sides as clean as possible. Bake crust until fragrant and golden brown, 15 to 18 minutes. Let cool on wire rack to room temperature, about 30 minutes. When cool, wrap outside of pan with two 18-inch square pieces heavy-duty aluminum foil and set springform pan in roasting pan. Bring kettle of water to boil.
2. FOR THE FILLING: While crust is cooling, process 1⁄4 cup sugar and lemon zest in food processor until sugar is yellow and zest is broken down, about 15 seconds, scraping down bowl as needed. Transfer lemon-sugar mixture to small bowl and stir in remaining 1 cup sugar.
3. Using stand mixer fitted with paddle, beat cream cheese on low speed until broken up and slightly softened, about 5 seconds. With mixer running, add lemon-sugar mixture in slow, steady stream; increase speed to medium and continue to beat until mixture is creamy and smooth, about 3 minutes, scraping down bowl as needed. Reduce speed to medium-low and beat in eggs, 2 at a time, until incorporated, about 30 seconds, scraping down bowl well after each addition. Add lemon juice, vanilla, and salt and mix until just incorporated, about 5 seconds. Add heavy cream and mix until just incorporated, about 5 seconds longer. Give filling final stir by hand.
4. Being careful not to disturb baked crust, brush inside of pan with melted butter. Pour filling into prepared pan and smooth top with rubber spatula. Set roasting pan on oven rack and pour enough boiling water into roasting pan to come halfway up sides of pan. Bake cake until center jiggles slightly, sides just start to puff, surface is no longer shiny, and cake registers 150 degrees, 55 minutes to 1 hour. Turn off oven and prop open oven door with potholder or wooden spoon handle; allow cake to cool in water bath in oven for 1 hour. Transfer pan to wire rack. Remove foil, then run paring knife around cake and let cake cool completely on wire rack, about 2 hours.
5. FOR THE LEMON CURD: While cheesecake bakes, heat lemon juice in small saucepan over medium heat until hot but not boiling. Whisk eggs and egg yolk together in medium bowl, then gradually whisk in sugar. Whisking constantly, slowly pour hot lemon juice into eggs, then return mixture to saucepan and cook over medium heat, stirring constantly with wooden spoon, until mixture is thick enough to cling to spoon and registers 170 degrees, about 3 minutes. Immediately remove pan from heat and stir in cold butter until incorporated. Stir in cream, vanilla, and salt, then pour curd through fine-mesh strainer into small bowl. Place plastic wrap directly on surface of curd and refrigerate until needed.
6. When cheesecake is cool, scrape lemon curd onto cheesecake still in springform pan. Using offset spatula, spread curd evenly over top of cheesecake. Cover tightly with plastic and refrigerate for at least 4 hours or up to 1 day. To unmold cheesecake, wrap hot kitchen towel around pan and let stand for 1 minute. Remove sides of pan. Slide thin metal spatula between crust and pan bottom to loosen, then slide cake onto serving platter and serve. (Cake can be made up to 3 days in advance; however, the crust will begin to lose its crispness after only 1 day.)

When cutting the cake, have a pitcher of hot tap water nearby; dipping the blade of the knife into the water and wiping it clean with a kitchen towel after each cut helps make neat slices.

GOAT CHEESE AND LEMON CHEESECAKE WITH HAZELNUT CRUST
The goat cheese gives this cheesecake a distinctive tang and a slightly savory edge. Use a mild-flavored goat cheese.
For crust, process generous 1⁄3 cup hazelnuts, toasted, skinned, and cooled, in food processor with sugar until finely ground and mixture resembles coarse cornmeal, about 30 seconds. Add cookies and process until mixture is finely and evenly ground, about 30 seconds. Reduce melted butter to 3 tablespoons. For filling, reduce cream cheese to 1 pound and beat 8 ounces room-temperature goat cheese with cream cheese in step 3. Omit salt.

TRIPLE CITRUS CHEESECAKE
For filling, reduce lemon zest to 1 teaspoon and lemon juice to 1 tablespoon. Process 1 teaspoon grated lime zest and 1 teaspoon grated orange zest with lemon zest in step 2. Add 1 tablespoon lime juice and 2 tablespoons orange juice to mixer with lemon juice in step 3. For curd, reduce lemon juice to 2 tablespoons and heat 2 tablespoons lime juice, 4 teaspoons orange juice, and 2 teaspoons grated orange zest with lemon juice in step 5. Omit vanilla.