Step 1Heat the oven to 400 degrees.
Step 2Cut the tomatoes, peppers, potatoes, onions and eggplant into 1-inch pieces. Place them in a shallow roasting pan large enough to hold all of the ingredients in a single layer.
Step 3Add the garlic, olive oil and salt and pepper to taste. Mix well.
Step 4Bake until the vegetables are tender and browned, 60 to 75 minutes, stirring every 15 minutes or so. Remove the vegetables to a serving dish, scraping up the browned bits. Stir in the basil. Serve warm or at room temperature.