Rustic Roasted Ratatouille with Marinara Sauce
Tender roasted eggplant, zucchini and colourful bell peppers tossed in a rich garlic herb marinara sauce. A comforting Mediterranean-inspired vegetable dish for cosy fall dinners.
Inspired by the fresh seasonal vegetables that are so plentiful in the Vancouver area, this rustic roasted vegetable ratatouille is a colourful and comforting way to use eggplant, zucchini, yellow squash and bell peppers. The vegetables are roasted until tender and lightly caramelized, then tossed in a rich marinara sauce seasoned with garlic, oregano and thyme. It is an easy, flavourful vegetable side dish that tastes like late summer in every bite.
A Rustic Roasted Ratatouille Bursting with Mediterranean Flavour
This rustic roasted ratatouille brings together tender eggplant, zucchini, yellow squash and colourful bell peppers, all coated in a rich herb marinara sauce. Roasting the vegetables brings out their natural sweetness and gives them lovely caramelized edges, while the marinara adds a comforting garlic and herb flavour. It’s a simple, hearty vegetable dish that’s full of colour and tastes just as good the next day.
Why You’ll Love This Easy Oven-Roasted Ratatouille
Roasting the vegetables rather than simmering everything together gives this ratatouille a wonderful texture. The eggplant becomes soft and creamy, while the zucchini and peppers develop slightly golden edges. Toss everything with the marinara sauce, and you have a delicious Mediterranean-inspired dinner without spending ages at the stove. It’s also a great way to use up extra summer vegetables.
Perfect for Cosy Fall Dinners and Holiday Gatherings
Serve this roasted ratatouille with warm crusty bread to soak up the delicious marinara sauce, or spoon it over pasta, rice or creamy polenta for a satisfying vegetarian dinner. It also makes a colourful side dish alongside roasted chicken or fish. For Thanksgiving or Christmas, it’s a lovely make-ahead vegetable dish that adds something a little different to the holiday table.
Fresh Ingredients for Rustic Roasted Ratatouille with Marinara Sauce
The secret to delicious rustic roasted ratatouille with marinara sauce starts with fresh, colourful vegetables. Eggplant, zucchini, yellow squash, red and yellow bell peppers, and onions create a wonderful combination of flavours and textures. Cutting the vegetables into evenly sized pieces helps them roast more evenly, developing beautifully caramelized edges while staying tender inside. A little olive oil, salt and pepper brings out their natural sweetness before they’re tossed with rich herb marinara sauce.
Tips and Tricks for Perfect Roasted Ratatouille with Marinara Sauce
• Cut vegetables evenly: Chop the eggplant, zucchini, yellow squash and bell peppers into similar-sized pieces so they roast evenly. Keep them slightly chunky to prevent them from becoming mushy.
• Don’t overcrowd the baking sheet: Spread the vegetables in a single layer, using two baking sheets if necessary. Crowded vegetables tend to steam rather than roast, and you’ll miss those delicious caramelized edges.
• Use enough olive oil: Toss the vegetables with olive oil until lightly coated. Eggplant absorbs quite a bit of oil, so make sure everything is evenly coated without becoming greasy.
• Roast at a high temperature: A hot oven helps develop golden edges while keeping the vegetables tender inside. Turn them halfway through roasting for more even browning.
• Add the marinara after roasting: Roast the vegetables before tossing them with the herb marinara sauce. This helps preserve their individual textures and prevents the ratatouille from becoming watery.
• Let the flavours develop: This rustic roasted ratatouille tastes even better after the vegetables have had time to absorb the garlic and herb marinara sauce. Leftovers are especially delicious the next day.
Real Kitchen Tip: The Secret to Perfectly Roasted Ratatouille
Eggplant and zucchini release quite a bit of moisture as they cook, so give your vegetables plenty of room on the baking sheet. For beautifully caramelized roasted ratatouille, let the vegetables develop golden edges before adding the marinara sauce. Resist the temptation to stir them too often! This keeps the vegetables tender without turning mushy and gives the finished dish a richer, more delicious flavour.
Delicious Variations for Rustic Roasted Ratatouille with Marinara Sauce
• Add fresh Mediterranean herbs: Stir in fresh basil, thyme or oregano just before serving. A little fresh basil adds wonderful flavour and pairs beautifully with the rich garlic herb marinara sauce.
• Make it cheesy: Sprinkle freshly grated Parmesan or crumbled feta over the warm roasted ratatouille. For something extra comforting, add mozzarella and return it to the oven until melted.
• Turn it into a hearty pasta dinner: Toss the roasted vegetables and marinara sauce with penne, rigatoni or your favourite pasta for an easy Mediterranean-inspired vegetarian meal.
• Add extra vegetables: Try mushrooms, cherry tomatoes or sliced red onions. Roast them alongside the eggplant, zucchini and bell peppers for even more flavour and colour.
• Give it a spicy kick: Add a pinch of crushed red pepper flakes to the marinara sauce for a little heat. Start with a small amount and adjust to your taste.
• Make it a protein-packed meal: Add drained chickpeas or cooked white beans to the roasted ratatouille. They soak up the delicious marinara sauce and turn this vegetable dish into a satisfying vegetarian dinner.
Rustic Roasted Ratatouille with Marinara Sauce
Equipment
- Large mixing bowl
- Two large rimmed baking sheets
- Parchment paper
- Sharp chef’s knife
- Large Cutting Board
- Measuring cups and spoons
- Large Dutch oven or deep skillet
- Wooden spoon or silicone spatula
- Large baking dish
- Oven mitts
- Airtight container for storing leftover roasted vegetable ratatouille
Ingredients
Roasted vegetables
- 1 eggplant large and cut into 1½-inch chunks
- 2 zucchini medium and cut into thick half-moons or chunks
- 2 yellow squash medium and cut into thick chunks
- 1 yellow onion large and cut into large pieces
- 1 red bell pepper cut into large pieces
- 1 yellow bell pepper cut into large pieces
- 4 tablespoons olive oil extra virgin
- 1 teaspoon sea salt
- ½ teaspoon black pepper
Marinara vegetable sauce
- 2 cups marinara sauce
- 1 cup tomato purée
- ½ cup vegetable broth
- ¼ cup carrot juice
- 2 tablespoons celeriac juice
- 1 tablespoon onion paste
- 3 cloves garlic minced
- 1 teaspoon onion powder
- 1 teaspoon garlic powder
- 1½ teaspoons dried oregano
- 1 teaspoon dried thyme
- 1 teaspoon smoked paprika
- ½ teaspoon dried basil
- ¼ teaspoon crushed red pepper flakes optional
- 1 bay leaf
- ½ teaspoon sea salt or to taste
- ¼ teaspoon black pepper
- 2 tablespoons fresh parsley chopped
- 1 teaspoon garlic-parsley seasoning optional
Instructions
Prepare the oven and pans.
- Preheat the oven to 425°F or 220°C. Line two large baking sheets with parchment paper.
Season the vegetables.
- Place the eggplant, zucchini, yellow squash, onion and bell peppers in a large bowl. Add the olive oil, sea salt and black pepper. Toss gently until the vegetables are evenly coated.
Roast until browned.
- Spread the vegetables between the prepared baking sheets in a single layer. Avoid crowding them or they will steam instead of roast. Roast for 25 to 35 minutes, turning once, until the eggplant is tender and the vegetables have browned edges. The zucchini and squash should be soft but still hold their chunky shape.
Make the marinara sauce.
- While the vegetables roast, combine the marinara sauce, tomato purée, vegetable broth, carrot juice, celeriac juice, onion paste, garlic, onion powder, garlic powder, oregano, thyme, smoked paprika, basil, red pepper flakes, bay leaf, salt and black pepper in a large Dutch oven or deep skillet.
Simmer the sauce.
- Bring the sauce to a gentle simmer. Cook uncovered for 12 to 15 minutes, stirring occasionally, until it becomes rich and slightly thickened. Remove the bay leaf.
Combine and finish baking.
- Gently fold the roasted vegetables into the marinara sauce. Transfer everything to a large baking dish and bake uncovered at 400°F or 200°C for 10 to 15 minutes. This helps the sauce cling to the vegetables without turning them mushy.
Add the finishing touches.
- Sprinkle with fresh parsley and garlic-parsley seasoning. Taste and add a little more sea salt or black pepper as needed. For darker roasted edges like those in the photo, broil the dish for the final 2 to 3 minutes, watching it carefully.
Notes
- Cut the eggplant, zucchini and yellow squash into large, chunky pieces so they hold their shape during roasting and do not become mushy in the marinara sauce.
- Spread the vegetables across two baking sheets. Crowding the pan traps moisture, while a little space helps create the browned edges that give this roasted vegetable ratatouille its best flavour.
- The eggplant may absorb the olive oil quickly. Toss everything well before adding more, as the vegetables will release some moisture while roasting.
- Use a thick, good-quality marinara sauce for the best results. A thin tomato sauce can make the finished ratatouille watery.
- Carrot juice adds mild sweetness and helps balance the acidity of the tomatoes without making the sauce taste sugary.
- Celeriac juice gives the sauce a subtle earthy flavour. It is quite distinctive, so a small amount is usually enough.
- Roast the vegetables until the eggplant is tender and the edges are lightly caramelized. The zucchini and yellow squash should still have some shape and texture.
- Fold the roasted vegetables gently into the marinara sauce. Vigorous stirring can break apart the tender eggplant and squash.
- Taste the completed eggplant, zucchini and bell pepper ratatouille before adding extra salt. Marinara sauce, vegetable broth and onion paste can already contain quite a bit.
- Add crushed red pepper flakes for a little heat, or leave them out for a mild and family-friendly vegetable dish.
- Let the ratatouille rest for about 10 minutes before serving. The marinara sauce thickens slightly and coats the roasted vegetables more evenly.
- Fresh parsley or basil added just before serving brightens the rich tomato, garlic, oregano and thyme flavours.
- This easy roasted ratatouille can be served warm, at room temperature or gently reheated. It is often even more flavourful the next day.