In a large stock pot, add ground beef, green peppers and onion over medium high heat. Add a dash of salt and pepper to mixture.
Cook until ground beef is brown and crumbled and veggies are tender. Drain excess grease.
Put ground beef mixture back into stock pot. Add prepared rice and can of tomato sauce.
Stir until thoroughly combined and heated through. Taste and check for seasonings at this point.
Turn off heat and add cheese (if using) until melted.
Stir mixture to combine and serve.
If you are using boil-in-the-bag rice, you will need 2 bags of rice for this recipe. 2 cups of dry rice will make 4 cups prepared. To reheat: put a cup or so of rice into a microwaveable-safe bowl. Sprinkle with about a tbsp. of water or chicken broth. Cover with paper towel and heat for about 1 minute. Stir to make sure it is evenly warmed through. Microwave for additional 20-30 seconds if necessary.