1 stick butter, melted
2 c. mashed potato or pumpkin (or squash)
1 (5 oz.) can evaporated milk
2 c. sugar
2 tbsp. plain flour
3 eggs
1 tsp. vanilla
1/4 tsp. pumpkin pie spice

Mix all ingredients well. Pour into unbaked pie shell. Bake at 325 degrees for 45 to 50 minutes.