In a small bowl, blend together wafer crumbs & brown sugar.
Mix in melted butter or margarine.
Press crumb mixture into sides & bottom of a 9” springform cake pan or a 9” pie plate.
Bake for 8-10 minutes at 375 degrees F.
Remove from oven & cool.
Filling:
In a large mixing bowl, beat softened cream cheese until light & fluffy. Gradually stir in sweetened condensed milk until thoroughly blended. Stir in lemon juice & vanilla.
Spread over cooled crust & refrigerate for 2-3 hours.