combine crumbs, sugar and margarine. Press rounded measuring tablespoon of
crumb mixture onto bottom of each of six paper-lined muffin cups. Bake at
325 for 5 minutes.
Combine cream cheese, sugar, juice, peel and vanilla, mixing at medium speed
on electric mixer until well blended. Blend in egg; pour over crust, filling
each cup 3/4 full. Bake at 325 for 25 minutes. Cool before removing from
pan. Chill. Top with preserves just before serving.