Sweet Potato Pie

1-1/2 cups cooked & mashed sweet potatoes
1 stick melted Butter
1-1/2 cups sugar
3 TBS flour
3 beaten eggs
2/3 cup pet milk
1 tsp lemon extract
1 tsp vanilla extract
1 unbaked deep dish pie crust

Combine all ingredients. Pour into unbaked pie crust. Bake at 350 F for 40 to 45 minutes. Test doneness with a knife.