I was going to put a recipe for Ratatouille on the blog, but Ratatouille is more flexible than a recipe. So here is an outline for what I consider the ultimate in summer eating.
Cooking strategy: You will want to cook the onion and garlic first (onion for longer) to flavor the olive oil. Then add tomatoes and once they start to release their juice add the eggplant and summer squash in order to let them cook in that tomato juice. Basil can be added very last.
Other good flavors to consider adding: Oregano, thyme, rosemary, pepper, salt.