Making Lemon Meringue Cheesecake can be straightforward if you follow these steps carefully:

1. Preheat the Oven: Preheat your oven to 325°F (160°C). Grease a 9-inch springform pan.
2. Prepare the Crust: In a bowl, combine graham cracker crumbs, melted butter, and ¼ cup sugar. Mix well and press firmly into the bottom of the prepared pan. Bake for 10 minutes, then let cool.
3. Make the Cheesecake Filling: In a large bowl, beat the softened cream cheese until smooth. Gradually add 1 cup of sugar and mix until well combined. Add eggs one at a time, mixing well after each addition. Stir in sour cream, lemon zest, lemon juice, and vanilla extract until fully incorporated.
4. Bake the Cheesecake: Pour the cheesecake filling into the cooled crust. Bake in the preheated oven for 45-50 minutes or until the edges are set, but the center is slightly jiggly. Turn off the oven and leave the cheesecake inside with the door ajar for 1 hour.
5. Prepare the Lemon Curd: In a medium saucepan, whisk together egg yolks and sugar. Stir in lemon juice and zest. Cook over medium heat, stirring constantly, until the mixture thickens and coats the back of a spoon. Remove from heat and stir in butter until smooth. Let cool slightly.
6. Layer the Cheesecake: Once the cheesecake has cooled, spread the lemon curd evenly over the top. Refrigerate for at least 4 hours or overnight for the best texture.
7. Make the Meringue: In a clean bowl, beat egg whites with cream of tartar until soft peaks form. Gradually add 1 cup of sugar, continuing to beat until stiff peaks form. Mix in vanilla extract.
8. Top with Meringue: Spread the meringue over the lemon curd, ensuring it seals the edges. Use a spatula to create peaks and swirls.
9. Bake the Meringue: Bake in a preheated oven at 350°F (175°C) for about 10-15 minutes or until the meringue is golden brown. Watch closely to prevent burning.
10. Cool and Chill: Allow the cheesecake to cool at room temperature for 30 minutes. Refrigerate for at least 2 hours before serving.

Following these steps will guide you in creating an incredible Lemon Meringue Cheesecake that is sure to delight everyone!