Cook Pasta In Large Saucepan As Directed On Package, Omitting Salt. Meanwhile, Cook Sausage In Deep Large Skillet On Medium-High Heat 10 To 12 Min. Or Until Done, Stirring Occasionally. Drain; Return Sausage To Skillet. Add Spinach And Tomatoes; Cook 2 Min. Or Until Spinach Is Wilted, Stirring Occasionally. Drain Pasta; Return To Pan. Add Sausage Mixture And Cheeses; Mix Lightly.