Cajun Red Beans and Rice

1⁄2 cup oil
1 cup Spanish onions, diced
11⁄2 tbsp. garlic, minced
1⁄4 bunch celery, diced
1 jalapeño, seeded, minced
2 green bell peppers, seeded, minced
11⁄2 tbsp. chili powder
1 tsp. dried oregano
1 tsp. black pepper
1 tbsp. salt
1 qt. brown rice or jasmine rose blend
1⁄2 #10 can diced tomatoes, drained, juice reserved
1⁄2 #10 can red kidney beans, drained and rinsed
Sliced scallion for garnish
Chopped parsley or cilantro for garnish

Note: Diced tomato and jalapeño can be replaced with same amount of salsa.