Heat oil in a large saucepan over medium heat. Add kielbasa and onion; cook and stir until kielbasa is browned and onion is translucent, 5 to 7 minutes. Remove to a plate.

Add broth, turnip greens, beans, soup mix, hot pepper sauce, garlic powder, Creole seasoning, salt, and pepper to the saucepan; bring to a boil over medium-high heat.

Return kielbasa and onion mixture to the saucepan. Reduce the heat to medium-low and simmer for 2 hours.