2 tablespoons cooking oil
1 pound andouille sausage, cut into ½-inch-thick rounds
¾ pound boneless, skinless chicken breast, cut into bite-sized pieces
1 onion, diced
1 bell pepper, seeded and diced
4 garlic cloves, minced
3 celery stalks, diced
1 (14.5-ounce) can diced tomatoes with juice
1 ½ cups chicken broth
1 tablespoon Creole seasoning (such as Tony Chacheres)
1 teaspoon kosher salt
1 cup uncooked long-grain white rice
Heat the oil in the Instant Pot using the sauté function.
Add the sausage and cook, stirring frequently, until the sausage is browned, about 6 minutes. Remove the sausage to a paper-towel-lined plate.
Add the onion, bell pepper, garlic and celery. Cook and stir until the vegetables begin to soften, about 5 minutes.
Add the chicken to the pot and cook, stirring, for 1 minute more. Add the undrained diced tomatoes, broth, Creole seasoning, salt and rice. Stir to mix.
Close the lid of the pot and turn the valve to the sealing position. Choose high pressure and set the timer for 5 minutes.
When the cooking time is up, quick-release the pressure and return the sausage to the pot.
Cover the pot again, and turn the valve to the sealing position. Choose high pressure and set the timer for another 5 minutes.
When the cooking time is up, quick-release the pressure and serve immediately.