Pre-heat the oven to 425° F.
In a large bowl, whisk together the brown sugar, salt, flour, and spices.
Slightly beat the eggs with a whisk, and add them to the mixture.
Add the pumpkin purée, milk, and evaporated milk, and mix everything together well.
Pour the pie filling into your prepared and unbaked pie shell.
Bake at 425° F for about 15 minutes; then reduce the temp to 350° F and bake for about 40 minutes, or until a knife inserted near the center comes out clean. You can use a pie shield to keep the crust from burning.
Then just allow the pie time to cool completely before serving. You can serve it with whipped cream or ice cream.