Place potatoes and ½ teaspoon of the salt in a 3-quart saucepan. Cover with 2 inches of water and bring to a boil.
Reduce to a simmer and cook for 10 minutes, or until potatoes are tender. Drain.
Meanwhile, in a large skillet heat oil over medium-high heat. Add the onion and bell pepper; cook 5 to 6 minutes or until crisp tender, stirring occasionally. Add potatoes, sausage, the remaining 1/2 teaspoon of the salt and the black pepper; cook and stir 4 to 5 minutes or until heated through.
Stir in beans; heat 1 to 2 minutes.
Drizzle the Balsamic Vinegar across the top of the skillet before serving.