Transfer vegetables to the prepared dish, cover with foil, and bake for 45 minutes, stirring once or twice during the baking time to make sure that the vegetables cook evenly (or until vegetables are tender). Garnish with capers, drizzle with olive oil, and season with salt and pepper just before serving.
Cooking Just for Two? Cut the ingredients in half and bake the ratatouille in an 8- or 9-inch square dish.
You can also prepare this recipe in a slow cooker. I suggest cooking for about 3 hours on HIGH or 6 hours on LOW, but every Crock Pot varies slightly in temperature, so keep an eye on your vegetables and turn it off when they're nice and tender!