Preheat the oven to 350°F (175°C).

Lightly spray a 9×13 baking dish with cooking spray.

Cook the pasta according to package directions, then drain and rinse.

In a skillet over medium-high heat, crumble and cook the ground beef until thoroughly cooked, then drain the grease.

Sauté Onions and mushrooms, about 6 min

Add the minced garlic, Italian seasoning, salt, and pepper to the beef, stirring to blend well.

Pour in tomato sauce, stir and simmer the mixture for 5 minutes.

Place half of the pasta in the bottom of the prepared baking dish. Top the pasta with sour cream. Spoon half meat mixture over the sour cream layer. Repeat the layers with the remaining pasta, sour cream, and meat mixture. Sprinkle the shredded cheese over the top of the casserole.

Bake covered with foil for 25 to 30 min

Remove foil and bake another 5 to 10 minutes.