Combine cracker crumbs and butter; mix well. Press into bottom of 7 inchx11 inch pan. Set aside. Assemble blender. Pour boiling water into blender container, add jello and process at "beat" until jello is dissolved. Add lemon juice and 1 cup cottage cheese. Process at "liquefy" until smooth. Add remaining cottage cheese and process until smooth. Pour into large mixer bowl. Add frozen whipped topping and mix until smooth. Chill until set. (This is ready for serving in minutes.) Spread Pie Filling over top when set. For variety try different fruit filling or even fresh fruit for topping. Fresh fruit can also be mixed into cheese cake before pouring into pan.