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Easy Classic Ratatouille with Zucchini and Peppers

By Ahsan ul Haq · Published: 22 October 2026 · Last updated: 21 October 2026 · How our recipes are developed

A black skillet seen from above, filled with chunky ratatouille - striped zucchini pieces, eggplant, red and orange peppers, tomato and bay leaves, all glossy with olive oil
Photo by Marcus Guimarães via Wikimedia Commons (CC BY 2.0).

Look at the pan in the photograph and you know exactly what this recipe promises: big, chunky pieces of zucchini with their striped skins still on, eggplant gone silky at the edges, strips of red and orange pepper, tomato slumped into the sauce, bay leaves riding on top, and everything glossy with olive oil. That gloss is not a styling trick. It is what ratatouille looks like when the vegetables cook in good oil, in the right order, long enough to soften without turning to mush.

The order is the whole lesson here, and it is simpler than the fussy versions suggest. Eggplant first, because it drinks oil and needs time to turn tender and sweet. Peppers and onion next, then zucchini, which collapses fastest and goes in late so it keeps its shape, and finally the tomatoes, which give up just enough juice to bring the pan together without making a soup. Garlic, bay and thyme run through all of it. Nothing is pureed, nothing is hidden - the pan you serve from is the pan in the picture.

Serve it as the main event with crusty bread for the juices, spooned over soft polenta, or alongside grilled chicken or fish when the table wants something lighter next to it. It belongs on the same table as our garlic herb shrimp zucchini skillet in zucchini season, and the rest of the Healthy & Low-Carb collection is full of vegetable-first dinners in the same spirit.

Prep25 minutes
Cook45 minutes
Total1 hour 10 minutes
Servings6 servings
Calories165 kcal

Why the vegetables cook in stages, not all at once

Eggplant, peppers and zucchini soften at genuinely different speeds, and a pan where everything goes in together proves it: the zucchini turns to water just as the eggplant finally gives way. Staging them - eggplant first, peppers and onion in the middle, zucchini near the end - means every piece is tender at the same moment, with its identity intact, exactly as the chunks in the photograph still show their skins and separate colours. It costs no extra pans and only a few minutes of attention.

Salt the eggplant, and do not skimp on the oil

Twenty minutes with salt draws the eggplant's bitter, watery juices out before it ever meets the pan, so it fries and softens instead of steaming, and it absorbs noticeably less oil as it cooks. Even salted, though, ratatouille is an olive-oil dish, not a low-oil one: the oil is the cooking medium, the sauce and most of the flavour, and it is why the finished vegetables shine the way they do in the picture. A timid two tablespoons gives you stewed vegetables; the full measure gives you ratatouille.

Ingredients

  • 1 large eggplant (about 1 1/4 lb / 570 g), cut into 1-inch chunks
  • 1 1/2 teaspoons fine sea salt (9 g), divided, plus more to taste
  • 1/4 cup olive oil (60 ml), plus more if the pan looks dry
  • 1 large yellow onion (about 200 g), cut into thick slices
  • 1 large red bell pepper (about 180 g), cut into wide strips
  • 1 large orange or yellow bell pepper (about 180 g), cut into wide strips
  • 2 medium zucchini (about 400 g), cut into thick half-moons or chunks
  • 4 garlic cloves (12 g), thinly sliced
  • 4 medium ripe tomatoes (about 600 g), chopped, or 1 (14 oz) can whole tomatoes, crushed by hand
  • 2 bay leaves
  • 1 teaspoon dried thyme (1 g), or 4 fresh thyme sprigs
  • 1/2 teaspoon black pepper (2 g)
  • 1/4 cup fresh basil or parsley leaves (10 g), torn, to serve

Amounts are for the yield below. US customary measures first, grams in brackets for scale users.

Step-by-step instructions

  1. Salt the eggplant. Put the eggplant chunks in a colander, toss with 1 teaspoon of the salt, and leave for 20 minutes while you prepare everything else. You will see beads of brownish liquid on the surface. Pat the chunks dry with paper towels or a clean cloth - do not rinse, which would waterlog them again.
  2. Soften the eggplant first. Heat the olive oil in a large, wide, heavy pan or Dutch oven over medium-high heat. Add the eggplant in a single layer as far as the pan allows and cook for 8 to 10 minutes, turning now and then, until the pieces are golden in places and starting to slump. Lift them out onto a plate, leaving the oil behind in the pan.
  3. Cook the peppers and onion. Add the onion and both peppers to the same pan with the remaining 1/2 teaspoon of salt. Cook for 7 to 8 minutes, stirring occasionally, until the onion is soft and sweet and the peppers have lost their raw crunch but still hold their shape and colour, like the strips you can see in the photograph.
  4. Add the zucchini and garlic. Stir in the zucchini and cook for 4 to 5 minutes, until it is just starting to turn translucent at the edges - it finishes in the sauce, so it should still be distinctly firm. Add the sliced garlic and stir for 30 seconds, until it smells fragrant but has not coloured.
  5. Bring the pan together. Return the eggplant and any juices to the pan. Add the chopped tomatoes with their juice, the bay leaves, thyme and black pepper, and stir everything together gently so the chunks stay whole. The tomatoes should give off just enough liquid to loosen the pan without covering the vegetables.
  6. Simmer low and slow. Turn the heat down to low, cover partially, and simmer for 20 to 25 minutes, stirring gently twice, until the eggplant is completely silky, the zucchini is tender, and the sauce has thickened around the vegetables so each piece is coated and glossy, as in the picture. Fish out the bay leaves, taste for salt, and rest the pan off the heat for 10 minutes before serving - ratatouille settles and improves as it stands. Scatter over the torn basil or parsley and serve warm or at room temperature, straight from the pan.

Nutrition estimate

NutrientPer serving
Calories165 kcal
Protein3 g
Carbohydrates16 g
Fat10 g
Saturated fat1.5 g
Sodium480 mg
Fiber6 g
Sugar9 g

Nutrition figures are estimates calculated from standard ingredient data for the yield stated. Your actual values will vary with brands, substitutions and portion sizes — treat them as a guide, not a guarantee.

Storage & reheating

Ratatouille famously improves overnight: leftovers keep in an airtight container in the refrigerator for up to 5 days, and the flavour deepens as the vegetables sit in the oil and tomato. Serve leftovers at room temperature, reheat gently over low heat until just warmed through, or spoon cold over toast with a fried egg. It freezes well for up to 3 months; thaw overnight in the refrigerator and reheat gently. Nutrition values are estimates from standard ingredient data and will vary with the vegetables and the oil absorbed; estimates vary.

A black skillet seen from above, filled with chunky ratatouille - striped zucchini pieces, eggplant, red and orange peppers, tomato and bay leaves, all glossy with olive oil

Easy Classic Ratatouille with Zucchini and Peppers

Recipe by Ahsan ul Haq, FryDaily editor · Published 22 October 2026

Chunky zucchini, eggplant and peppers simmered in olive oil until glossy, tender and deeply savoury.

Yield: 6 servings  ·  Scale:
Prep25 minutes
Cook45 minutes
Total1 hour 10 minutes
Servings6 servings
Calories165 kcal

Ingredients

Tick ingredients off as you prep, and tap a step below to mark it done as you cook. Scaling adjusts the listed amounts - seasoning to taste stays your call.

Instructions

  1. Salt the eggplant. Put the eggplant chunks in a colander, toss with 1 teaspoon of the salt, and leave for 20 minutes while you prepare everything else. You will see beads of brownish liquid on the surface. Pat the chunks dry with paper towels or a clean cloth - do not rinse, which would waterlog them again.
  2. Soften the eggplant first. Heat the olive oil in a large, wide, heavy pan or Dutch oven over medium-high heat. Add the eggplant in a single layer as far as the pan allows and cook for 8 to 10 minutes, turning now and then, until the pieces are golden in places and starting to slump. Lift them out onto a plate, leaving the oil behind in the pan.
  3. Cook the peppers and onion. Add the onion and both peppers to the same pan with the remaining 1/2 teaspoon of salt. Cook for 7 to 8 minutes, stirring occasionally, until the onion is soft and sweet and the peppers have lost their raw crunch but still hold their shape and colour, like the strips you can see in the photograph.
  4. Add the zucchini and garlic. Stir in the zucchini and cook for 4 to 5 minutes, until it is just starting to turn translucent at the edges - it finishes in the sauce, so it should still be distinctly firm. Add the sliced garlic and stir for 30 seconds, until it smells fragrant but has not coloured.
  5. Bring the pan together. Return the eggplant and any juices to the pan. Add the chopped tomatoes with their juice, the bay leaves, thyme and black pepper, and stir everything together gently so the chunks stay whole. The tomatoes should give off just enough liquid to loosen the pan without covering the vegetables.
  6. Simmer low and slow. Turn the heat down to low, cover partially, and simmer for 20 to 25 minutes, stirring gently twice, until the eggplant is completely silky, the zucchini is tender, and the sauce has thickened around the vegetables so each piece is coated and glossy, as in the picture. Fish out the bay leaves, taste for salt, and rest the pan off the heat for 10 minutes before serving - ratatouille settles and improves as it stands. Scatter over the torn basil or parsley and serve warm or at room temperature, straight from the pan.
Calories: 165 kcalProtein: 3 gCarbohydrates: 16 gFat: 10 gSaturated fat: 1.5 gSodium: 480 mgFiber: 6 gSugar: 9 g

Recipe by Ahsan ul Haq · FryDaily. Printing? This card is designed to print cleanly on its own.

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Recipe by Ahsan ul Haq

Ahsan ul Haq is the owner and editor of FryDaily. He plans the recipe calendar and writes the site's recipes from classic home-cooking methods and standard references — US measures with grams, honest planning times and a nutrition estimate on every page. More about the author · How our recipes are developed

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Frequently asked questions

Can I roast the vegetables instead of cooking them in a pan?

Yes, and it is a good hands-off route. Toss each vegetable separately in olive oil and salt, roast on sheet pans at 425°F (220°C) - eggplant for about 30 minutes, peppers and onion for 25 minutes, zucchini for 20 minutes - then combine them in a pan with the tomatoes, garlic, bay and thyme and simmer together for 10 minutes so the flavours marry. The result is a little less saucy and a little more caramelised than the pan version pictured, but every bit as good.

My ratatouille came out watery - what went wrong?

Usually the tomatoes gave up more juice than expected, or the zucchini went in too early and shed its water into the pan. Simmer the finished dish uncovered for 5 to 10 minutes to reduce it, and next time keep the zucchini stage short before the tomatoes go in. Salting and drying the eggplant properly also matters more than it sounds - wet eggplant steams, and that steam ends up in your sauce.

Can I use canned tomatoes instead of fresh?

Absolutely - out of season, canned are the better choice. Use 1 (14 oz) can of whole tomatoes, crushed by hand with their juice, as listed. Fresh tomatoes only earn their place when they are properly ripe and heavy for their size; pale winter tomatoes make a thin, sharp sauce where a can would have made a rich one.

What do I serve with ratatouille?

As a main dish: crusty bread, soft polenta, couscous, or a fried or poached egg on top of each portion - the yolk in the tomato oil is a small luxury. As a side, it sits happily next to grilled chicken, fish, lamb chops or sausages, and a spoonful of soft goat cheese crumbled over each serving is a very Provençal finishing touch.

Can I add other vegetables?

Summer squash and yellow zucchini swap straight in, and a handful of green beans or a chopped fennel bulb can join the peppers without disturbing the balance. What does not belong is anything that cooks to water or dominates - skip cucumber-family extras beyond the squash, and leave potatoes out; this is a light, olive-oil vegetable dish, not a stew, and its chunky clarity in the pan is the point.