01 -
Preheat the oven to 350°F (175°C).
02 -
In a large skillet, brown the ground beef and onion over medium heat until the meat is no longer pink.
03 -
Drain excess fat and stir in the diced tomatoes, cream of mushroom soup, garlic powder, Italian seasoning, salt, and pepper.
04 -
Add the cooked pasta to the mixture and mix well.
05 -
Transfer the mixture to a greased baking dish and top with shredded cheddar cheese.
06 -
Bake in the preheated oven for 25-30 minutes, or until the cheese is melted and bubbly.
07 -
Let it cool for a few minutes before serving.