Slightly thaw the tartlet shells. Poke several holes in the tarts' bottoms and sides with a fork. Bake at 375 degrees for 10 minutes, or until golden brown. Cool completely.
Combine the cottage cheese, cream cheese, sugar, lemon zest, lemon juice and vanilla extract. Blend until smooth.
Fill tartlets about half way with the cream mixture. The tartlets may be refrigerated for up to 8 hours at this point until use.
Microwave the apricot jam just to melt, approximately 15 seconds. Lightly brush over fruit.
Top tarts with bite-sized pieces of fruit just before serving.