Chop onions peppers and sausage.
Using a dutch oven, over medium heat, saute peppers and onions in the olive oil and minced garlic.
Add sausage after cooking the vegetables about half way through.
Once sausage is almost browned, about 5 minutes, add green chillies, allow them to heat up, then transfer to a plate.
Toast rice in the dutch oven with the butter.
Once the rice starts to toast on the edges, add tomato sauce and water, cover and bring to a boil
Reduce stove to simmer, leave covered, and allow rice to cook for 18 minutes.
Remove from heat, add sausage vegetables meat and seasonings.
Top with cilantro and serve immediately.