Cook sausage in large skillet over medium high heat for 8-10 minutes, breaking into crumbles. Drain canned tomatoes into large bowl, reserving 1 cup of the tomato liquid.
Add drained tomatoes and liquid from tomatoes, pasta, chicken broth, pepper flakes and salt to skillet. Cover and cook 13-15 minutes or until pasta is tender, stirring occasionally.
Add grape tomatoes, spinach, and remaining cup of tomato liquid to skillet. Cook 1-2 minutes or until spinach is wilted. Stirring constantly. Sprinkle with cheese.