Preheat oven to 350 degrees F. Combine all ingredients in a mixing bowl; beat 1 minute.
Pour into pie crust.
Bake for 1 hour. Covering the edges of the pie with a pie shield or aluminum foil for half the baking time will prevent the crust from over-browning.
If the middle hasn't risen after an hour, cook the pie 5 to 10 minutes longer. Make sure the middle of the pie has risen so you know it has cooked completely.
Let cool.
