Heat a skillet over medium high heat and add the andouille sausage. Cook until browned and caramelized on the edges, about 3-5 minutes. Remove and set aside.
Turn the heat to medium and add the butter, onion, garlic and green pepper. Sauté for 1-2 minutes.
Add the tomato paste and mix in. Cook another 1-2 minutes, stirring regularly to ensure the tomato paste doesn't burn.
Add the chicken stock, Cajun seasoning and sausage and bring to a boil.
Add the rice and stir to mix everything together. Turn the heat to low, cover, and simmer for 18-20 minutes. Turn off the heat and let sit for 10 minutes.
Fluff and serve garnished with diced green onions and Louisiana hot sauce.
Notes
Brown the andouille until the edges are caramelized before removing it from the skillet.
Rinse the long grain white rice thoroughly before cooking.
Keep the lid on during the entire simmering period.
Use a timer so the rice doesn't accidentally cook longer than intended.
Don't skip the 10-minute resting period.
Fluff the rice before serving rather than aggressively stirring it.
Finish with diced green onions and Louisiana hot sauce for a fresh, spicy contrast.