Heat a large non-stick skillet over medium heat. Add butter and melt.
Add sausage slices and brown for 3–4 minutes.
Remove seasoning packets from Rice-A-Roni. Toast rice in skillet for 1–2 minutes.
Stir in 5 cups water and seasoning packets. Reduce heat, cover, and simmer for 20 minutes.
Steam broccoli until tender, chop into bite-sized pieces.
Add sausage, broccoli, and shredded cheddar to skillet. Stir to combine until cheese is melted.
