To a large skillet over medium-heat, add butter. When butter is hot, add onions. Cook until tender, stirring frequently, about 5 minutes.
Add rice into skillet and stir to coat with butter and onions.
When rice begins to brown, add vegan chicken-style broth and salsa.
Bring just to a boil then reduce heat to low. Cover and simmer 20 minutes, until rice is cooked and liquid has been absorbed.