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