Spanish Rice Casserole - With poultry

1 lb mild bulk sausage (Jimmy Dean is best) 1 cup uncooked rice 1 medium onion , finely chopped 2 cups chicken stock or 2 cups broth 1 (14 1/2 ounce) can[...]

2 cups Uncle Ben's converted brand rice 4 cups cooked chicken 1 onion , chopped 1 bell pepper , chopped 2 (14 ounce) cans diced tomatoes 2 tablespoons tomato[...]