Preheat the oven to 350°F (175°C).

In a large bowl, combine the softened butter and granulated sugar, then cream until light and fluffy.

Add the egg and vanilla extract to the mixture, then mix until fully combined.

Gradually mix in the flour and salt until just combined to form the dough.

Press the cookie dough into the bottom of a greased 9-inch springform pan, creating an even layer.

In another bowl, beat the softened cream cheese until smooth and creamy.

Add powdered sugar, lemon juice, and salt to the cream cheese, mixing until fully combined and smooth.

Spread the cream cheese mixture over the cooled crust in the springform pan.

Bake in the preheated oven for 40-45 minutes, or until the edges are set and the center slightly jiggles.

Remove from the oven and cool at room temperature for 30 minutes, then refrigerate for at least 2 hours before serving.

Optional: Before serving, top with sprinkles or other desired toppings for a festive touch.