Ratatouille stew is a classic French dish that is bursting with flavors. Made with a medley of vegetables like eggplant, zucchini, bell peppers, and tomatoes, this stew is a celebration of summer produce. The vegetables are cooked slowly in a tomato-based sauce, allowing the flavors to meld together. Serve this stew with crusty bread or over a bed of couscous for a taste of the Mediterranean.