In a large mixing bowl, stir together flour, sugar and salt.
Cube the butter and scatter over flour mixture. Using a pastry cutter or two forks, cut in the butter until pea sized crumbles form.
Add the ice water, a little at a time, while working the dough with your hands. If dough still seems dry, add an additional 1 tbsp of ice water at a time. Do not overwork dough or it will become tough.
Gather the dough into a ball, (it may be a little crumbly), wrap in plastic wrap and refrigerate for at least 30 minutes.
Divide dough into 6 parts. Use one piece at a time and keep the rest refrigerated.
On a floured surface, roll out dough a 1/4 inch thick and 1/2 inch larger than the tartlet pan. Use a serrated knife and cut a circle out of the dough. Discard scraps or use scraps and bake in a small pie plate.
Gently press the dough into the edges of the tartlet pan, trimming off any excess.
Repeat with remaining dough.
Use a fork and prink holes on the bottom of the tartlets. Place prepared tartlets on a baking sheet.
Bake in a preheated oven set to 425 degrees for 12-15 minutes, or until the crust is golden. If the crust has any bubbles in it while cooking, just use the fork and prick the dough. This will allow the air that has been trapped to escape.
Transfer to a wire rack and cool completely.