Puzzle of the Week for 23 November 1998

The Snoids are very particular about sharing their pumpkin pie equally among all five members of the family. Usually, they cut their pie into five equal wedges, but their pie tin suffered a disastrous accident in a frisbee game last week, and this Thanksgiving, their pie will be baked in a square pan. How can they divide the pie so that everyone gets an equal share of filling and an equal share of the crust?