Begin by chopping the onion, bell peppers, celery, and garlic. If using frozen shrimp, thaw them beforehand.

Heat a large skillet over medium heat and cook the sausage until browned, about 5-7 minutes. Remove from skillet and set aside.

In the same skillet, add the chopped onion, bell peppers, celery, and garlic. Cook until softened, about 4-5 minutes.

Stir in the rice and Cajun seasoning, mixing well with the sautéed veggies. Pour in the broth and bring to a boil.

Once boiling, reduce heat and add the shrimp. Cover and cook until rice is tender and shrimp are pink, about 20 minutes.

Remove from heat, fluff rice gently with a fork, and stir in the cooked sausage. Top with green onions.