Place a large saute pan over medium high heat and add olive oil. Add onions and kielbasa. Cook until lightly browned and then add garlic and stir for 30 seconds.
Add ROTEL tomatoes, broccoli, broth, and quinoa. Bring to a boil and cover with a lid.
Reduce heat to low and simmer for 20 minutes or until quinoa is cooked.
Turn off heat and stir in cheese. Garish with diced green onions.