Bake the store-bought flaky pie crust first. While it's cooling, make the filling.
To make streusel topping: In a bowl, combine flour, oats, brown sugar, salt, stir with a fork to combine. Add the butter and mix well until moist, set aside.
To make the filling: Combine the pears and lemon juice in a large bowl and stir. In a small bowl, whisk together flour, nutmeg, cinnamon, sugar, raisins and lemon zest. Pour over the pears and stir well to combine.
Pour the pear mixture into the cooled pie crust, add the streusel to the top, using your fingers to evenly spread over the pears.
Bake at 350° for 1 hour or until the pastry is golden brown and the filling has thickened and has begun to bubble.
Transfer to a rack and cool completely, or you can serve it warm with scoop of vanilla bean ice cream.
Published on December 16, 2009