Mix well, cover with foil and bake for 1 hour.
Remove bay leaves (and garlic clove if you left it whole) and discard them. Sprinkle parsley over the vegetables.
Lower oven temperature to 320°F (160°C) and bake for 20-25 minutes or until set.
You can make this recipe in a skillet by sautéing all the vegetables until soft, and save a lot of time, by I prefer baking them since this way I let the oven do all the work.