2 c. cooked, mashed sweet potato
1 c. sugar
1/2 c. butter, softened
2 eggs
1/2 c. evaporated milk
1 deep dish unbaked pie shell
1 tsp. ginger
1 tsp. cinnamon
1 tsp. nutmeg
1/4 tsp. salt

Combine sweet potatoes, sugar, butter, eggs, spices and salt in a large mixing bowl; beat until light and fluffy. Add evaporated milk; mix just until combined. Pour into pie shell. Bake at 400 degrees for 10 minutes; reduce heat to 350 degrees and bake 45 to 50 minutes or until set. Cool. Top with whipped topping if desired.