Cook minute rice in water (1c. rice to 1c. water).
Slice or dice onions and bell pepper. Sauté onions and half of the bell peppers in olive oil for 5 minutes. Add beans and sauté for about 2 minutes. Add spices/seasonings and stir on low heat for 2 minutes.
Dice tomato, avocado, cilantro and remaining peppers.
Serve all ingredients buffet style to build burritos.