Ratatouille Provençale (Slow-Simmered Vegetable Stew)
Why this recipe works
- Layered vegetable flavour: Cooking the onion, garlic, peppers and aubergine in stages helps each vegetable develop sweetness and depth before the tomatoes are added.
- Gentle simmering: A low, uncovered simmer lets the vegetables soften without breaking down completely while the tomato juices reduce into a concentrated sauce.
- Improves as it rests: Ratatouille holds well and often tastes even more rounded after the flavours have had time to settle.
Get the most out of this recipe
Authenticity notes
- Provençal roots: Ratatouille is closely associated with Provence, where summer vegetables, olive oil, garlic and herbs are central to the dish.
- Rustic rather than refined: This version follows a homely stew style, with the vegetables cooked down into a soft, cohesive mixture rather than arranged in neat slices.
Ingredient notes
- Use ripe tomatoes: Ripe tomatoes give the stew better sweetness, acidity and body; underripe tomatoes can leave the sauce thin or sharp.
- Cut evenly: Keeping the vegetables in similar-sized chunks helps them soften at a similar pace without some pieces collapsing too early.
- Herb choices: Fresh thyme gives a cleaner Provençal aroma, but dried thyme works well when added early so it has time to soften into the sauce.
Texture tips
- Keep some structure: Simmer gently rather than boiling hard; aggressive heat can turn the vegetables watery and overly broken down.
- For a thicker finish: Cook uncovered until the juices reduce and cling to the vegetables, stirring occasionally so the base does not catch.
Make-ahead tips
- Good the next day: The stew keeps well in the fridge and the flavour becomes more integrated after resting overnight.
- Freezer-friendly: Cool completely before freezing in a sealed container, then defrost in the fridge before reheating gently.
- Reheat gently: Warm over low heat and add a small splash of water if the sauce has thickened too much in storage.
Equipment you'll need
Ingredients
Instructions
- Heat the olive oil in a large heavy-based pot over medium heat. Add the onion with a pinch of the fine sea salt and cook for 8 to 10 minutes, stirring, until soft and lightly golden.
- Stir in the garlic and thyme and cook for 1 minute until fragrant. Add the red pepper and cook for 5 minutes, stirring occasionally, until starting to soften.
- Add the aubergine and cook for 8 to 10 minutes, stirring, until it begins to collapse and take on a little colour. If the pot looks dry, add a small splash of water and scrape up any browned bits.
- Add the courgette and cook for 5 minutes, just to take the raw edge off. Tip in the tomatoes, then season with the remaining fine sea salt and the black pepper.
- Bring to a gentle simmer, then reduce the heat to low and cook uncovered for 35 to 40 minutes, stirring every so often, until the vegetables are very tender and the juices have thickened. Taste and adjust seasoning if needed.
- Take off the heat and remove the thyme sprigs. Tear in most of the fresh basil, reserving a little to finish, then rest for 2 to 3 minutes so the flavours settle.
- Serve warm, scattered with the remaining basil. Spoon over the thickened juices from the pot.
Recipe notes
Tips
- Cut the vegetables into similar-sized chunks so they cook down evenly without turning to mush.
- Keep the heat low once simmering; ratatouille should bubble gently, not boil hard, so the vegetables stay sweet and the sauce reduces slowly.
Substitutions
- Replace fresh thyme with 1 tsp dried thyme for a similar Provençal flavour.
- Replace fresh basil with fresh flat-leaf parsley for a greener, peppery finish.
Storage
- Refrigerate up to 4 days
- Cool completely, then refrigerate in a sealed container for up to 4 days. Reheat gently in a saucepan over low heat, stirring, until piping hot; add a splash of water if it has thickened too much. Freeze for up to 3 months and defrost overnight in the fridge before reheating.
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Recipe overview
- Servings: 4 servings
- Total time: 1h 15min (20min active)
- Difficulty: Easy
- Cuisine: French
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