01 - Heat vegetable oil in a large skillet or Dutch oven over medium-high heat until shimmering.
02 - Add ground beef and cook, breaking apart with a wooden spoon, until browned and cooked through, approximately 5 to 7 minutes. Drain excess fat if necessary.
03 - Add onion, bell peppers, and celery to the skillet. Sauté for 6 to 8 minutes until vegetables are softened and fragrant.
04 - Stir in minced garlic and cook for 1 minute until fragrant, being careful not to burn.
05 - Sprinkle Cajun seasoning, thyme, smoked paprika, black pepper, salt, and cayenne pepper over the meat and vegetables. Stir thoroughly to coat evenly.
06 - Add rinsed rice to the skillet and stir to combine. Allow rice to toast lightly for 1 to 2 minutes, stirring occasionally.
07 - Pour in chicken broth and bring mixture to a rolling boil.
08 - Reduce heat to low, cover tightly, and simmer for 20 minutes or until rice is tender and liquid has been fully absorbed.
09 - Remove from heat and let stand, covered, for 5 minutes. Fluff rice with a fork, garnish with green onions and parsley, and serve hot.