In a large skillet, over medium heat, add oil. Once heated, add onions and green peppers and sauté until translucent and light golden.
Add garlic and sauté for 1 minute, or until fragrant.
Add kosher salt, oregano, fresh ground pepper, ground cumin and bay leaf. Mix well and sauté for 1 minute.
Add black beans, mix well, and cook, stirring occasionally to prevent sticking. Cook until warmed through.
Serve over rice or baked potato. Garnish with sliced green onions.