1 (9 inch) unbaked pie shell
1 1/2 c. cooked and mashed sweet potato
1 1/2 c. evaporated milk
1 c. sugar
1 tsp. cinnamon
1/2 tsp. nutmeg
1/4 to 1/2 tsp. ground allspice
1 tsp. vanilla
3 eggs, slightly beaten

Combine sweet potato, evaporated milk, sugar, cinnamon, nutmeg, allspice, and vanilla. Stir until blended. Add eggs. Mix well. Turn into pie shell. Bake at 450 degrees for 10 minutes. Lower heat to 350 degrees and bake for 30 minutes or longer, until filling is firm.