Simple Red Bean-and-Rice Soup

In a large pot, heat oil over medium-high. Add onion and bell pepper and saute until softened, 5 minutes. Add garlic and Cajun seasoning and cook until fragrant, 30 seconds. Add broth and beans and bring to a boil. Reduce heat to medium and season with salt. Simmer until broth is slightly thickened, about 20 minutes, skimming any foam that rises to top.

Stir in rice and cook, stirring occasionally, 15 minutes. Add scallions and cook 5 minutes. Remove from heat and season with additional Cajun seasoning, if desired.