Let ice cream come to room temperature and preheat oven to 350 degrees.
Melt butter and crush graham cracker crumbs. Pour both into a bowl and stir. Press into a pie pan sprayed with non-stick spray and bake for 5 minutes at 350 degrees. Cool completely.
While the crust bakes, prepare the filling: Put ice cream into a large bowl and chop candies. Add candy to ice cream mixture and stir. Pour into baked crust, cover, and freeze for 3 1/2 hours.