Ratatouille is a rustic garden dish. It’s meant to be fast and savory without a lot of flair. Making it fancy is putting lipstick on a pig. Anyone who says different’s a poseur. [So there!]
The following is a basic recipe. It can be spiced up by adding bell pepper and garlic or a hot pepper. But remember, overcomplicating this recipe will destroy it. It will look prettier but taste worse.