HEAT oven to 350°F.
SPREAD 3/4 cup sauce onto bottom of 13x9-inch baking dish. Mix cheeses, egg and basil until well blended; spoon into resealable plastic bag. Use scissors to cut small corner from bottom of bag.
FILL manicotti shells by squeezing cheese mixture into both sides of each shell; place in baking dish. Top with remaining sauce; cover.
BAKE 40 min. or until heated through.