01 -
Preheat the oven to 175°C. Lightly coat a 23 x 33 cm baking dish with nonstick cooking spray and set aside.
02 -
In a large skillet over medium heat, cook ground beef until no longer pink, breaking up the meat as it cooks. Drain excess fat.
03 -
Stir in diced tomatoes with juice, Rotel tomatoes with green chilies, salt, black pepper, onion powder, garlic powder, and tomato paste. Mix thoroughly. Reduce heat to low and simmer for 20 minutes, stirring occasionally until sauce thickens slightly.
04 -
Meanwhile, bring a large pot of salted water to a boil. Add egg noodles and cook according to package instructions until al dente. Drain well and transfer noodles to a large mixing bowl.
05 -
Add sour cream to the hot noodles and stir until evenly coated.
06 -
Spread sour cream-coated noodles evenly in the prepared baking dish. Spoon the meat sauce over the noodles, spreading to cover evenly.
07 -
In a small bowl, combine shredded cheddar, grated Parmesan, and shredded mozzarella. Evenly sprinkle the cheese mixture over the meat sauce layer.
08 -
Cover the baking dish with aluminium foil. Bake in the preheated oven for 35 minutes until hot and bubbling.
09 -
Remove foil and bake for an additional 5-10 minutes until the cheese is fully melted and golden brown.
10 -
Let the casserole rest for 5 minutes before serving. Serve hot, optionally with garlic bread or a green salad.