01 - Preheat oven to 375°F. Lightly grease a 9x13 inch baking dish with cooking spray or butter.
02 - Cook egg noodles according to package directions until al dente. Drain thoroughly in a colander and set aside.
03 - Heat olive oil in a large skillet over medium heat. Add diced onion and red bell pepper; sauté for 3 to 4 minutes until softened and translucent.
04 - Add ground beef to the skillet and cook until browned, breaking up with a spatula. Drain excess fat from the skillet.
05 - Stir in minced garlic and cook for 1 minute until fragrant. Add tomato paste, drained tomatoes, frozen peas, Italian herbs, paprika, salt, and black pepper. Cook for 3 to 4 minutes to meld flavors.
06 - Remove skillet from heat. Mix in sour cream and cream of mushroom soup until fully incorporated into the beef mixture.
07 - Add half of the shredded cheddar cheese and the cooked noodles to the skillet. Gently fold until evenly distributed throughout the mixture.
08 - Spoon the mixture into the prepared baking dish, spreading evenly. Top with the remaining shredded cheddar cheese in a uniform layer.
09 - Bake for 25 to 30 minutes until the cheese is melted and golden brown. Let the casserole rest for 5 minutes before serving to allow it to set.