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