Easy Brown Rice Casserole with Turkey Italian Sausage and Green Bell Pepper

large onion, finely chopped

green bell pepper, stem and seeds removed and finely chopped

+ 2 tsp. olive oil

Italian seasoning (a blend of dried oregano, marjoram, thyme, and rosemary)

– 1/2 tsp. ground fennel (optional)

or 5 links turkey Italian sausage (1 – 1 1/4 lb.)

cooked brown rice

low-fat cheese (I used a four cheese blend)