Step 1: Prepare the Gingersnap Crust

1. Preheat your oven to 350°F (175°C).
2. In a mixing bowl, combine gingersnap cookie crumbs, granulated sugar, and melted butter. Mix until the crumbs are evenly coated.
3. Press the mixture firmly into the bottom and up the sides of a 9-inch pie plate. Bake for 10 minutes until set. Remove from the oven and let cool.

Step 2: Make the Cranberry Filling

1. In a medium saucepan, combine cranberries, granulated sugar, cornstarch, lemon juice, vanilla extract, ground cinnamon, and salt.
2. Cook over medium heat, stirring occasionally, until the cranberries burst and the mixture thickens (about 10–15 minutes). Remove from heat and let it cool slightly.

Step 3: Prepare the Cream Cheese Layer (optional)

1. In a mixing bowl, beat together the softened cream cheese, powdered sugar, and vanilla extract until smooth and creamy.
2. Gently fold in the whipped topping until fully combined.

Step 4: Assemble the Pie

1. If using, spread the cream cheese layer evenly over the cooled gingersnap crust.
2. Pour the cranberry filling over the cream cheese layer, or directly onto the crust if not using cream cheese.

Step 5: Bake

1. Bake the pie in the preheated oven for 15–20 minutes, until the filling is bubbly and the crust is lightly browned.
2. Remove from the oven and let it cool to room temperature. Refrigerate for at least 2 hours before serving.

Step 6: Serve

1. Slice the pie and serve chilled or at room temperature. Enjoy the delicious combination of flavors!