Heat the oil in a large lidded skillet over medium-high heat. Add the sliced sausage and cook for 4–5 minutes until browned and crispy on the edges. Remove the sausage with a slotted spoon and set aside.
In the same skillet, add the onion, bell pepper, and celery. Sauté for about 5 minutes until the vegetables are softened. Stir in the garlic and cook for 1 minute until fragrant.
Stir in the Mahatma White Rice, diced tomatoes, chicken broth and Cajun seasoning. Bring the mixture to a boil, then reduce the heat to low, cover the skillet with a tight-fitting lid, and simmer for 20 minutes, or until the rice is tender and most of the liquid is absorbed.
Add the shrimp and cooked sausage. Replace the lid and cook for another 3–5 minutes until the shrimp are pink and opaque.
Remove from heat and let it sit, covered, for 5 minutes. Fluff the rice with a fork, season to taste with salt and pepper. Garnish with green onions and parsley. Enjoy!