COOK pasta as directed on package, omitting salt. Meanwhile, drain tomatoes, reserving half the oil. Process tomatoes and reserved oil in food processor or blender until smooth. Add cheese and nuts; process 30 sec. or until blended. Transfer to small saucepan.
ADD half-and-half; stir. Cook on medium heat until 3 to 5 min. or heated through, stirring occasionally.
DRAIN pasta; place in large bowl. Add sauce; toss to coat.