Preheat oven to 375 degrees. Place the unbaked pie crust into a 9-inch pie plate and set aside
In a large bowl, combine grated apples, eggs, sugar, melted butter and lemon juice and optional spices (if using). Mix well.
Spoon the filling into the prepared crust.
Bake for 40-50 minutes, or until the filling is mostly set.
While the pie bakes, beat egg whites until stiff peaks form. Gradually add sugar and flavoring.
Remove pie from oven and spread meringue evenly over the hot filling.
Return pie to the oven and bake an additional 10-12 minutes, or until meringue is lightly browned.
cool completely before slicing.