Normally, ratatouille cooks uncovered to let moisture evaporate. So how do you get this summery vegetable stew to work in the slow cooker, where the lid stays on the whole time?
Why This Recipe Works
The slow cooker is tailor-made for long-cooked stews, but this Provençal dish is chock-full of watery vegetables, and the cooker doesn’t allow for any evaporation—a recipe for bland, runny ratatouille. Draining the canned tomatoes was a good start, and adding some flour at the outset helps, too. In the end, tossing the chopped vegetables with olive oil and a little sugar and broiling them before they go into the slow cooker not only adds flavorful browning but also drives off moisture, creating a stewy—not soupy—dish. Garlic and herbes de Provence season the ratatouille as it cooks, and Parmesan cheese and fresh basil finish it off.