The Most Extraordinary Casserole

Preheat the oven to 350°F. Cook the flat noodles according to package directions, then drain and set aside.

Brown the lean ground beef in a large skillet over medium-high heat, breaking it into small pieces as it cooks, for approximately 8-10 minutes. Drain excess fat if needed.

Add the chopped onion to the cooked beef and sauté until softened, about 3-4 minutes. Stir in the Cajun seasoning if using.

Stir in both cans of cream of mushroom soup, the can of tomato soup, and the can of tomato paste until well combined.

Fold in the cooked noodles and the can of Mexicorn (with liquid), mixing gently to distribute evenly throughout the meat mixture.

Season with salt and pepper to taste. Transfer the entire mixture to a large casserole dish.

Spread the grated sharp cheddar cheese evenly over the top of the casserole, covering the surface completely.

Bake uncovered at 350°F for 25-30 minutes until the cheese is melted and bubbly and the casserole is heated through.

Remove from the oven and let rest for 5 minutes before serving. This allows the casserole to set slightly for easier portioning.