The pies can be baked ahead of time and rewarmed when ready to serve. Just bake the pies as directed, and cool completely. Leave toppings off, and refrigerate up to 2 days. When ready to serve, heat oven to 300°F, and warm in the oven about 15 minutes or until warmed through. Top as directed.
The pies can be fully assembled and left unbaked for up to 2 days. Just assemble the pies as directed, cover and refrigerate in their muffin cups. When ready to bake, remove from fridge, and let stand on the counter while you heat oven to 350°F. Bake and top as directed.
To freeze the baked mini pies: Place on a baking sheet; cover and freeze 45 minutes. Remove from freezer, and place pies in resealable freezer plastic bag. Label bag, and place in freezer. When ready to bake, allow pies to sit in the fridge for 2 hours or overnight to thaw, or bake frozen at 375°F 20 to 30 minutes or until warmed through.