Preheat the oven to 375 degrees F. Place a skillet over medium heat. Add the butter, chopped onions, bell peppers, and garlic. Sauté for 2-3 minutes to soften.
Chop the chicken breast into 3/4-inch chunks and slice the andouille sausage into 1/2-inch rounds.
In a 3-quart baking dish, combine the rice, sauteed veggies, chicken, sausage, canned tomatoes, cajun seasoning, and 1 cup Borden® Sharp Cheddar Cheese Shreds. Stir and pour the broth over the top. Gently shake the pan to make sure all the rice is submerged in the broth. Then cover the pan tightly with foil and bake for 60+ minutes, until the rice is tender.
Remove the foil and fluff the rice with a fork. Sprinkle the remaining 1 cup of shredded cheese and chopped scallions over the top. Bake uncovered another 3-5 minutes to melt the cheese.