Heat vegetable oil in a large skillet over medium heat and brown the ground beef and minced chicken gizzards until fully cooked.
Add the onions, bell pepper, and seasonings (garlic powder, celery seed, Creole seasoning, cayenne, black pepper) and sauté until softened.
Stir in the long-grain rice and toast for 2-3 minutes to enhance the flavor.
Pour in the beef broth and water, stir well, and bring to a boil.
Reduce heat to low, cover, and let it simmer for 20-25 minutes until the rice is tender.
Remove from heat and let it sit, covered, for 5 minutes.
Fluff with a fork, taste, and adjust seasoning if needed.
Serve hot with Crispy Southern Fried Chicken or Mashed Potato Puffs for a perfect meal!