In a large mixing bowl combine pumpkin, apple butter, sugar, cinnamon, ginger, and nutmeg. Add eggs; beat lightly with a rotary beater or wire whisk till combined. Gradually stir in evaporated milk and milk; mix well.

Prepare and roll out pastry as directed. Line a 9-inch pie plate with pastry. Trim and crimp a high pastry edge or attach leaf-shaped cutouts. Pour pumpkin mixture into pastry shell. To prevent overbrowning, cover edge of pie with foil. Bake in a preheated 375 degrees F oven for 25 minutes. Remove foil and bake about 25 minutes more, or till a knife inserted near center comes out clean. Cool on a rack for 1 hour. Chill 3-6 hours before serving. Store in the refrigerator. If desired, serve with whipped cream.