Place flour and pecans in the bowl of a food processor and pulse a few times to finely chop the nuts, add melted butter and blend a few times until combined.
Pat into a 9" deep dish pie pan and bake for 20-25 min at 350°F. Let cool.
In a medium bowl beat together cream cheese and sugar, fold in whipped topping.
Spread cream cheese mixture over the cooled crust. Spread cherry pie filling over top. Refrigerate for several hours before serving.