Begin by preheating your oven to 375°F (190°C), ensuring it's ready for baking.
In a large skillet set over medium heat, add the ground beef. Use a spatula to break it apart into small, bite-sized pieces. Cook for 6-8 minutes or until fully browned, stirring occasionally. If any excess fat accumulates, drain it from the skillet.
Once the beef is cooked, add in the diced green bell pepper and chopped onion. Sauté everything together for about 5 minutes until the vegetables are softened and fragrant.
Incorporate the diced potatoes, corn, cream of mushroom soup, Worcestershire sauce, garlic powder, onion powder, and season with salt and pepper. Stir well to ensure all ingredients are evenly combined.
Transfer the hearty mixture into a greased 9x13 inch baking dish, spreading it into an even layer.
Cover the dish with aluminum foil to retain moisture, and place it in the preheated oven. Bake for 35 minutes to allow the flavors to meld and the potatoes to start softening.
After 35 minutes, carefully remove the foil and sprinkle the shredded cheddar cheese generously over the top of the casserole. Return it to the oven and bake uncovered for an additional 10-15 minutes, until the cheese is melted, bubbly, and golden, and the potatoes are tender when pierced with a fork.
Once baking is complete, remove the casserole from the oven and allow it to sit for a few minutes to set. Finish by garnishing with freshly chopped parsley for a touch of color and freshness.
Notes
Serve in individual bowls, garnished with extra parsley. Pair with a side salad or crusty bread.