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 instructions until al dente. Drain thoroughly in a colander and set aside.
03 - In a large skillet, heat olive oil over medium heat. Add diced onions and red bell pepper; sauté for 3–4 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 pan.
05 - Stir in minced garlic and cook for 1 minute until fragrant. Add tomato paste, drained tomatoes, peas, Italian herbs, paprika, salt, and pepper. Cook for 3–4 minutes to combine flavors.
06 - Remove skillet from heat. Mix in sour cream and cream of mushroom soup until fully incorporated into the beef mixture.
07 - Fold in half of the shredded cheddar cheese and the cooked egg noodles until evenly distributed throughout the mixture.
08 - Transfer the mixture to the prepared baking dish. Top evenly with the remaining shredded cheddar cheese.
09 - Bake for 25–30 minutes until the cheese is melted and golden brown. Let rest for 5 minutes before serving to allow the casserole to set.