Method

Pre-heat the oven to 365°F.
Line a square tart pan or pie dish with pie crust sheets. Remove the pie crust sheets that overlap the pan.
Thinly slice the pears and arrange them in a shingle pattern in the pan. Add cranberries.
In a mixing bowl, combine the brown sugar, flour, and cinnamon. Sprinkle the dry mixture into the pie dish to cover the pears and cranberries.
Cube the butter into teaspoon cubes. Top the pie with 5 teaspoons of butter.
Cook the pie at 365 degrees for 20 minutes. After twenty minutes add three teaspoons of butter to the pie to keep it moist. Lower oven temperature to 300°F and cook for another 20 minutes.
Remove from the oven.