The easiest method to make pie crust is to combine 3 parts flour, 2 parts butter and 1 part ice water in a food processor and pulse until a dough forms. If you don't have a food processor, cut the butter into the flour using a pastry blender or fork.
Pour 1 1/2 cups of all-purpose flour in a food processor, and add 1/4 teaspoon of fine salt and 1 teaspoon of granulated sugar. For savory pies, leave the sugar out. Pulse the ingredients a few times, then add 8 tablespoons of unsalted butter cut up into small pieces. Blend until the dough is in small, pea-sized pieces, then slowly drizzle in 4 to 5 tablespoons of ice water until the dough forms the necessary consistency. Add the ice water a little at a time. You need to avoid overworking the dough, which can make it too tough. The dough is ready when it loses its crumbly consistency.
Cover it in plastic wrap, and refrigerate it. After 30 minutes, roll out the dough onto a floured surface, and press the dough into a pie plate or tart pan. Trim away any dough that hangs more than 1 inch over the rim.