01 -
Set the oven temperature to 350°F.
02 -
Boil egg noodles in salted water until just tender, about one minute less than the package directs. Drain and set aside.
03 -
In a large skillet over medium-high heat, cook ground beef until fully browned. Drain excess fat from the pan.
04 -
Incorporate onion powder, garlic powder, salt, and pepper into the cooked beef, stirring until evenly distributed.
05 -
In a spacious mixing bowl, blend the seasoned beef, cooked noodles, cream of mushroom soup, sour cream, and 1 cup of shredded cheddar cheese until thoroughly combined.
06 -
Transfer the mixture into a greased 9x13-inch casserole dish, spreading evenly. Sprinkle the remaining 1 cup of shredded cheddar cheese on top.
07 -
Place the dish in the oven and bake for 20 minutes until heated through and bubbling.
08 -
Remove the casserole from the oven and evenly distribute 1 ½ cups crispy French onions over the surface. Return to the oven for an additional 5 to 7 minutes until onions are golden and crisp.
09 -
Allow the casserole to rest for 5 minutes to set before portioning and serving.