Jambalaya With A Twist

Name: Jambalaya With A Twist
Ingredients: 1 medium yellow onion, chopped; 1/2 medium green bell pepper, chopped; 1/2 medium red bell pepper, chopped; 2 clove garlic, minced; 2 Tbsp olive oil; 1 pkg andouille sausage (johnsonville 13.5 oz), sliced into 1/2 rounds; 1 can(s) diced tomatoes with green chilies (14.5 ounce); 1 can(s) stewed tomatoes, (14.5 ounce); 1 can(s) black beans (14.5 ounce), rinsed and drained; 1 c water; 3/4 c long grain white rice; 2 Tbsp cajun seasoning or to taste (optional)