To make the tart pastry dough, begin by adding the flour, salt, and sugar into your food processor, or mixing bowl. Pulse or mix to combine the dry ingredients.
Cut the cold butter into cubes, and add it to your mixture.
If using a food processor, pulse for a few seconds. Just until the mixture has pea sized clumps in it.
The same applies if you are using a pastry cutter. Cut the pastry dough until your mixture has pea sized clumps in it.
Slowly pour the ice-cold water into the mixture as you mix. Just until the dough begins to come together. Please note, that you may not need to add all of the ice water.
Stop mixing as soon as the dough comes together.
Lightly flour a clean work surface.
Dip your hands in a little bit of flour, and then pick up your tart pastry dough. Gather the dough into a ball and place it on a lightly floured surface.
Sprinkle a little more flour on top, and use the rolling pin, to roll the dough flat.
Spray your tart pan with cooking spray.
Transfer the rolled dough to the prepared tart pan.
Press the dough so that it sits smoothly against the sides of the pan. Use your fingers to shape it against the sides of the tart pan if needed.
Trim off any excess dough that hangs over the top of the pan.
Press the tines of a fork around the bottom of the pan.