Vegan Slow Cooker Jambalaya

Name: Vegan Slow Cooker Jambalaya
Ingredients: * 1 tbsp olive oil; * 1 green bell pepper, diced; * 2 celery stalk, diced; * 1 medium onion, diced; * 3 garlic clove, minced; * 1 1/2 cup diced tomato (about 3 tomato or a 14 ounce can); * 4-5 cup vegetable broth; * 2 tbsp paprika; * 2 tbsp ground cumin; * 2 tsp ground black pepper; * 1 tsp dried thyme; * 1 tsp dried oregano; * 2 tbsp cayenne pepper hot sauce (adjust to heat preference); * 2 cup long grain brown rice; * 1 3/4 cup cooked or 1 14 oz can red kidney bean, drained; * 2 cup chopped vegan sausage (optional, i like field roast brand); * 2-3 scallion, chopped