Cook and drain fettuccine as directed on package, omitting salt.
Meanwhile, in 10-inch skillet, heat 1/4 cup of the broth to boiling over medium-high heat. Add mushrooms; cook, stirring frequently, until almost all liquid is absorbed. Stir in additional 1/4 cup broth. Continue cooking mushrooms 4 to 6 minutes, stirring frequently, until tender.
Stir in remaining 1/4 cup broth; heat to boiling. Stir in spinach, tomatoes, Italian seasoning and salt. Cook 1 to 2 minutes, stirring constantly, until spinach is wilted. Stir in evaporated milk just until heated through.
Place fettuccine on large platter. Top with spinach mixture and cheese.