01 -
Preheat oven to 175°C.
02 -
In a skillet over medium heat, cook ground beef until fully browned. Drain and discard any excess fat.
03 -
In a large mixing bowl, combine the browned beef, drained green beans, cream of mushroom soup, milk, shredded cheddar cheese, garlic powder, onion powder, salt, and black pepper. Mix thoroughly to ensure even distribution.
04 -
Lightly grease a baking dish. Transfer the mixture into the dish and spread evenly across the surface.
05 -
Place the baking dish in the centre of the preheated oven and bake uncovered for 25 minutes.
06 -
Sprinkle crispy fried onions evenly over the top. Return to oven and bake for an additional 5 to 10 minutes until the topping is golden and the casserole is bubbling.
07 -
Allow to rest for 5 minutes before serving to achieve a firmer consistency.