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