In food processor, combine flour, sugar, and salt. Add butter and pulse until crumbly. Add vodka or vinegar and pulse until dough comes together. Press into lightly greased 9 tart pan.
Place 1 pint of the blueberries over the crust. Combine the sugar, flour, cinnamon, and nutmeg and sprinkle the mixture over the blueberries.
Bake at 400° for 50-60 minutes until crust is browned and filling is bubbly. Remove from oven, arrange and press remaining blueberries in a layer over the top.
Dust with powdered sugar before serving
Thanks to Taste of Home for the recipe (http://www.tasteofhome.com/recipes/heavenly-blueberry-tart)