That is a great question.  Our test kitchens would recommend refrigerating or freezing prior to baking, and then using the following preparation directions:  

Baking Directions for Refrigerated and Frozen Impossibly Easy Pies

Baking Directions for Refrigerated Impossibly Easy Pies:

Impossibly Easy pies made from Bisquick®baking mix can be covered and refrigerated up to 24 hours before baking.  Uncover and bake as directed in recipe.

Baking Directions for Frozen Impossibly Easy Pies

Impossibly Easy pies made from Bisquick baking mix can be covered and frozen up to 1 month before baking.  Uncover and bake frozen pie as directed below:

Impossibly Easy Pecan Pie:  Bake as directed in recipe.

Impossibly Easy Brownie Pie:  Bake as directed in recipe except--increase bake time to 45 to 55 minutes.

Impossibly Easy Seafood Pie:  Bake as directed in recipe except--increase bake time to 55 to 65 minutes.

Impossibly Easy Coconut Pie:  Bake as directed in recipe except--increase bake time to 55 to 65 minutes.

Impossibly Easy Cherry Pie:  Bake as directed in recipe except--increase bake time to 40 to 50 minutes.

Impossibly Easy Bacon Pie:  Bake as directed in recipe except--increase bake time to 50 to 60 minutes.

Impossibly Easy Pumpkin Pie:  Not recommended for freezing.

Impossibly Easy Lasagne Pie:  Bake as directed in recipe except--increase bake time to 40 to 50 minutes.

Impossibly Easy Turkey Pie:  Bake as directed in recipe except--increase bake time to 50 to 60 minutes.

Impossibly Easy Ratatouille Pie:  Bake as directed in recipe except--increase bake time to 45 to 55 minutes.

Impossibly Easy Crabmeat Vegetable Pie:  Bake as directed in recipe except--increase bake time to about 50 minutes.

Impossibly Easy Taco Pie:  Bake as directed in recipe except--increase first bake time to 35 minutes.  Top with tomatoes; sprinkle with cheese.  Bake 17 to 23 minutes longer.

Impossibly Easy Vegetable Pie:  Bake as directed in recipe except--increase bake time to 45 to 55 minutes.

Impossibly Easy Garden Pie:  Bake as directed in recipe except--increase bake time to about 50 minutes. 

Impossibly Easy Cheeseburger Pie ( with sliced tomatoes):  Bake as directed in recipe except--increase first bake time to 30 minutes.  Top with tomatoes; sprinkle with cheese.  Bake 17 to 23 minutes longer.

Impossibly Easy Cheeseburger Pie ( one without sliced tomatoes):  Bake as directed in recipe except--increase bake time to about 50 minutes.

Impossibly Easy Italian Sausage Pie:  Bake as directed in recipe except--increase bake time to 50 to 60 minutes.

Impossibly Easy Salmon Pie:  Bake as directed in recipe except--increase bake time to about 45 minutes.

Impossibly Easy Shrimp Pie:  Bake as directed in recipe except--increase bake time to 40 to 50 minutes.

Impossibly Easy Ham Salad Pie:  Bake as directed in recipe except--increase bake time to 40 to 50 minutes.

Impossibly Easy Green Bean Pie:  Bake as directed in recipe except--increase bake time to 45 to 55 minutes.

Impossibly Easy Mexican Pie:  Bake as directed in recipe except--increase bake time to 45 to 55 minutes.

Impossibly Easy Cheesecake:  Bake as directed in recipe except--increase bake time to about 45 minutes.

Impossibly Easy Chocolate Cheesecake:  Bake as directed in recipe except--increase bake time to about 45 minutes.

Impossibly Easy Quiche:  Bake as directed in recipe except--increase bake time to 55 to 65 minutes.