Cook pasta as directed on package. Crumble meat into large deep skillet. Cook on medium-high heat 10 to 12 min. or until cooked through, stirring occasionally; drain. Add spinach and tomatoes; cook 2 min. or until spinach is wilted, stirring occasionally. Remove from heat; cover to keep warm. Drain pasta. Add to skillet along with the cheeses; toss lightly.
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