1. Cook pasta in boiling, salted water according to the package directions. 2 minutes before pasta is done, add asparagus to water and blanch. Drain pasta and asparagus together.
2. Meanwhile, place sausages in large nonstick pan and cook until cooked through. Remove from heat and set aside.
3. Add onion and mushrooms to pan. Cook until tender.
4. Slice sausage. Add to pan and cook 1 minute until warmed through. Toss sausage mixture with pasta and asparagus. Add herbs and mozzerella at the end.