Poor Man’s Casserole

Preheat the Oven:
Preheat your oven to 350°F (175°C) and grease a 9×13-inch baking dish.
Cook the Ground Beef:
In a large skillet, brown the ground beef over medium heat. Add the chopped onion and cook until softened, about 5 minutes. Drain any excess fat.
Season the Beef:
Stir in the taco seasoning, following the packet instructions to thicken the mixture.
Prepare the Noodles:
In a medium bowl, combine the cooked egg noodles, sour cream, and cream of mushroom soup until the noodles are well coated.
Assemble the Casserole: