Preheat oven to 350 degrees F (175 degrees C).

Cook noodles in boiling water for 20 minutes, then drain.

While noodles are cooking, brown ground chuck in a skillet and drain off any excess grease.

Add chopped onion to the skillet with the browned ground chuck and sauté until softened.

Stir in garlic powder, black pepper, Italian seasoning, salt, and sliced button mushrooms.

Add 1 cup of shredded cheddar cheese to the meat mixture and stir until melted.

Pour the cooked noodles and meat mixture into a 2-quart casserole dish.

Top with tomato sauce, spreading evenly.

Bake in the preheated oven for 25 minutes.

Remove from oven and top with remaining cheddar cheese.

Sprinkle grated Parmesan cheese over the top.

Return to the oven and bake for 5 more minutes, or until the cheese is melted and bubbly.