Whisk pumpkin puree, condensed milk, eggs, cinnamon, ginger,
nutmeg, and salt together in a medium bowl until smooth.
Pour into crust.
Bake in the preheated oven for 15 minutes.
Reduce oven temperature to 175°C and continue baking until a knife inserted
1 inch from the crust comes out clean (35 to 40 minutes). Let cool before serving.