In a large skillet over medium heat, brown the ground beef until fully cooked, about 5-7 minutes. Drain excess fat.
Add the diced onion, green bell pepper, and minced garlic to the skillet. Sauté until the vegetables are tender, about 3-4 minutes.
Stir in the diced tomatoes, tomato sauce, elbow macaroni, beef broth, oregano, basil, salt, and black pepper. Bring the mixture to a boil.
Reduce the heat to low, cover, and simmer for 20-25 minutes, or until the macaroni is cooked and the mixture is thickened. Stir occasionally to prevent sticking.
If desired, sprinkle shredded cheddar cheese on top during the last 5 minutes of cooking. Cover until the cheese is melted.
Serve hot and enjoy!