Preheat oven to 425°. Beat butter, sugar and cinnamon until crumbly. Beat in flour and walnuts. Press onto bottom and up side of a 9-in. fluted tart pan with a removable bottom coated with cooking spray. For filling, beat cream cheese and 1/4 cup sugar until smooth. Beat in egg and vanilla. Spread into crust. Arrange pears over top.
Pear Clafouti. On low speed, mix in the flour, cream, vanilla extract, lemon zest, salt, and pear brandy. Set aside for 10 minutes. Meanwhile, peel, quarter, core, and slice the pears. Arrange the slices in a single layer, slightly fanned out, in the baking dish. Pour the batter over the pears and bake until the top is golden brown and...
Sprinkle evenly over the top of the two tarts. Gently fold the border of each tart over the pears, pleating it to make a circle. Bake the crostatas for 30 minutes, or until the crust is golden and the pears are tender. Let the tarts cool for 5 minutes, then use 2 large spatulas to transfer them to wire racks.
On low speed, mix in the flour, cream, vanilla extract, lemon zest, salt, and pear brandy. Set aside for 10 minutes. Meanwhile, peel, quarter, core, and slice the pears.