Preheat the oven to 400°F.
Use 1 teaspoon of the olive oil to oil a large casserole dish (about 8 by 12 inches). If you omit the oil, some of the ingredients may get a little sticky in the pan, but no biggie!
Place the potatoes in a saucepan, cover with water, and bring to a boil.
Lower the heat to medium-low and boil for 15 to 20 minutes, or until fork tender (see note).
When potatoes are ready, drain well and add to the prepared dish along with the other ingredients, except the vinegar and the fresh basil.
Toss the mixture well, cover the dish with foil, and bake for 40 minutes (stirring about halfway through the baking process), until the potatoes are fully tender and the other vegetables have heated through and somewhat softened.
Add the vinegar, toss again, and bake for another 10 to 15 minutes uncovered.
Remove from the oven, sprinkle with the fresh basil, and season to taste with salt and pepper as desired.
Serve on its own, with bread, or over quinoa, brown rice, or pasta, topped with a quick avocado sauce or mash, or 'Basil Lemon Pistou' (from LTEV). Serves 4-5.