In a food processor (or you can buy them pre-ground, which is AMAZING!), finely grind the crackers until there are no more discernable pieces of cracker. Pour into a medium bowl.
Add the salt and melted butter and mix until all the crumbs are moist and homogenous.
Press into your 9-10 inch pie dish (the one pictured is 9 ½ inches) using a tart tamper or the back of a ½ cup measuring cup, which is what I did.