Top with your favorite fruit filling, if desired or leave them plain.
In a small bowl, combine crumbs and butter. Press about 1-1/2 tablespoon gently onto the bottom of foil-lined muffin cups.
In a large bowl, combine the cream cheese, sugar, lemon juice and vanilla. Add eggs; beat on low speed just until combined. Spoon onto crusts.
Bake at 375 degrees for 12-15 minutes, or until centers are almost set. Cool completely.