Heat olive oil in a large skillet over medium heat. Add bread cubes and salt; cook, stirring, until bread is nicely browned. Remove from pan and set aside.
In the same pan, brown Italian sausage pieces, stirring occasionally, 10 min. or to taste.
Combine chopped tomatoes, cucumbers, red onion, and basil in a large salad bowl and toss to combine.
Add bread, sausage, Parmesan, and vinaigrette; toss to combine.