Preheat oven to 400 degrees F. Spray a large Dutch oven (or other oven-safe pot) with cooking spray.
Place cabbage, onion, potatoes, sausage, garlic, salt, and diced tomatoes in the pot.
In a separate bowl, whisk together balsamic vinegar, chicken broth, and condensed soup. Pour over cabbage mixture and gently stir to combine.
Cover with a lid and bake for 45 minutes, or until vegetables are tender. I like to stir the pot halfway through the cooking time just to ensure even cooking.
Garnish with parsley just before serving.
Notes
Cooking Just for Two?Cut the ingredients in half and prepare the dinner in a smaller baking dish. The rest of the cooking instructions remain the same.