01 - Set oven to 375°F and allow to preheat.
02 - Cook egg noodles in a saucepan of boiling water according to package directions, drain and set aside.
03 - In a large skillet over medium heat, add ground beef and cook until thoroughly browned. Drain 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 their juice, beef broth, dried oregano, dried basil, salt, and black pepper. Simmer for 5 minutes, stirring occasionally.
06 - Remove skillet from heat. Incorporate cooked noodles and sour cream, mixing until the blend is uniform.
07 - Transfer mixture into a 9x13-inch baking dish and spread out 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 fully melted.
09 - Remove from oven, sprinkle chopped parsley over the top, and serve hot.