HEAT oven to 450°F.
PLACE tart shells on baking sheet. Sprinkle chocolate onto bottoms of shells.
WHISK remaining ingredients until well blended; spoon into shells.
BAKE 12 to 14 min. or until filling in each shell is puffed and bubbly, and pastry is lightly browned. Cool completely.
serving size = 1 tart (52 g)