Preheat oven to 350°F (175°C) and lightly grease a 9×13-inch baking dish.
In a large skillet, cook ground beef over medium heat until browned. Add onion and green bell pepper, cooking until softened. Drain excess fat.
In a large mixing bowl, combine the cooked beef and vegetable mixture, cream of mushroom soup, cream of chicken soup, sour cream, cooked rice, garlic powder, salt, and pepper. Stir thoroughly.
Pour the combined mixture into the greased baking dish, spreading it out evenly. Sprinkle shredded cheddar cheese over the top.
Bake in the preheated oven for 25-30 minutes, or until cheese is melted and bubbly.
Garnish with chopped fresh parsley if desired, and serve hot.
Notes
This casserole is best served warm and pairs well with a simple side salad for a balanced meal.
Nutrition
Calories: 450kcal
Keyword comfort food, family dinner, hamburger rice casserole, one-dish meal