Bring water to boil for pasta. Cook pasta following package instructions. Cook green beans in bag following microwave instructions; let stand 5 minutes to cool. Chop bag contented into bite-sized pieces.
Preheat large, nonstick saute pan on medium-high 2-3 minutes. Remove casing from sausage and place in pan. Cook sausage 6-8 minutes, stirring occasionally, and until 165 F. Remove from heat and cover.
Drain pasta, reserving 1/2 cup pasta water. Add pasta, pasta water, bag contents, cheese, and dressing to sausage in pan. Toss to coat; serve