Follow the directions for making Simple Pumpkin Pie by combining the pie filling ingredients: pumpkin puree, condensed milk, eggs, and pumpkin pie spice. Pour into the unbaked pie crust and bake as instructed.

Prepare the meringue. Place the sugar, egg whites, cream of tartar, and salt over a simmering double boiler. Stir consistently until the sugar melts and the mixture reaches 160°F.

Transfer the mixture to a stand mixer. Whisk on low speed, then gradually increase speed to medium-high until glossy peaks form. Add vanilla extract and mix until combined.