01 - Preheat the oven to 375°F.
02 - Cook egg noodles in a large saucepan following package directions, then drain and set aside.
03 - In a large skillet over medium heat, cook ground beef until fully browned. Drain any excess fat.
04 - Add diced onion, minced garlic, and diced bell pepper to the skillet. Sauté for 3 to 4 minutes until vegetables are soft.
05 - Stir in tomato sauce, diced tomatoes with juices, beef broth, dried oregano, dried basil, salt, and black pepper. Allow to simmer for 5 minutes.
06 - Remove skillet from heat. Fold in the cooked egg noodles and sour cream, mixing thoroughly.
07 - Transfer mixture into a 9x13-inch baking dish. Evenly distribute shredded cheddar cheese over the top.
08 - Bake uncovered for 20 to 25 minutes until the casserole is bubbling and cheese is melted.
09 - Sprinkle chopped fresh parsley over the surface before serving, if desired.