Form all ingredients. Mix to form dough. Press into muffin cups to form tart shells.
Filling
Beat egg whites until stiff. Fold in remaining ingredients. Mix. Spoon into prepared shells.
Bake on lower rack for 17 to 24 minutes at 350°F. Cool.
Notes
This recipe comes from a fantastic cookbook prepared by the Friends of the Grist Mill in 2003 based on some of the most popular recipes in the Tea Room.