In a large bowl, combine the flour and salt
Cut the butter into the flour
Add in ice water (start with 7 tbsp then knead with your hands. If there is still dry dough at the bottom that won't combine, add in 1 more tbsp of water)
Knead dough for a few minutes and flatten them into thick discs (like pizza crust), wrap in plastic wrap, and place into the fridge for at least 45 minutes
Once you are ready to use, take out of the fridge for 10 minutes to thaw and roll into the shape of your dish (allow 1-2 inch overlap for crimping)
Divide into two equal parts if you want a top and a bottom crust (if you only want a top, wrap the other and place into freezer)
When rolling, first roll into a flat circle and then fold into thirds and roll flat again. Do this three times so you get a flakey, layered crust