
This spring ratatouille has become my signature dish when the farmers' markets begin to flourish with vibrant vegetables. The combination of layered eggplant, squash, and tomatoes creates a visually stunning meal that tastes even better than it looks.
I first made this ratatouille for a dinner party where I needed to accommodate both vegetarian and gluten-free guests. The empty skillet at the end of the night and multiple recipe requests confirmed it was a hit worth repeating.
Ingredients
- Eggplant: Large sliced in quarter inch pieces provides the hearty base that absorbs all the flavors. Look for firm eggplants with shiny skin and no soft spots.
- Summer squash: Small sliced in quarter inch pieces adds beautiful color contrast and sweetness. Choose squash that feels heavy for its size.
- Salt: For eggplant helps draw out moisture and bitterness. Use kosher salt for best results.
- Vine ripened or heirloom tomatoes: Sliced quarter inch thick bring bright acidity and natural sweetness. Choose tomatoes that yield slightly to pressure and smell fragrant.
- Avocado oil: Withstands high heat without breaking down. Any neutral cooking oil works too.
- Fresh basil: Chopped brings essential aromatic freshness. Pick bunches with vibrant green leaves.
- Grated parmesan cheese: Adds savory depth. Choose freshly grated for best flavor.
- Canned peeled tomatoes: Form the sauce base. San Marzano variety offers superior flavor.
- Dried oregano: Infuses the sauce with classic Mediterranean flavor. Crush between fingers before adding to release oils.
- Garlic: Minced provides essential aromatic foundation. Look for firm bulbs with no sprouting.
- Yellow onion: Sliced thin sweetens and deepens the sauce. Store in a cool dark place for longevity.
- Bell pepper: Sliced thin adds subtle sweetness and complexity. Red or yellow varieties offer slightly sweeter profile than green.
- Salt and black pepper: Enhance all other flavors. Freshly ground pepper makes a noticeable difference.
- Red wine (optional): Deepens flavor complexity. Use what you would drink.
- Crushed red pepper (optional): Adds pleasant heat. Adjust according to preference.
Step-by-Step Instructions
- Prepare The Oven:
- Set your oven to 375°F and allow it to fully preheat while you prepare the vegetables. Position the rack in the middle of the oven for even heat distribution.
- Prepare The Eggplant:
- Toss your sliced eggplant with half tablespoon of salt in a colander and let it sit for at least 10 minutes. This crucial step draws out bitter compounds and excess moisture for a better final texture.
- Create The Sauce Base:
- Heat your cast iron skillet over medium heat and add a tablespoon of oil. Add onions garlic and bell peppers allowing them to slowly release their flavors for 5 to 7 minutes until softened and fragrant. You want them soft but not browned.
- Season The Sauce:
- Add your oregano salt pepper and optional red pepper flakes to the sautéed vegetables. Cook for 2 to 3 additional minutes which allows the dried herbs to bloom in the oil releasing more flavor compounds.
- Simmer The Sauce:
- Pour in your canned tomatoes and optional splash of red wine breaking up the whole tomatoes with a wooden spoon. Reduce heat to medium low and allow to simmer for 10 to 15 minutes until slightly thickened and flavors have melded together. The sauce should coat the back of a spoon.
- Prepare The Eggplant Slices:
- While the sauce simmers rinse the salt from your sweated eggplant slices under cool water. Pat thoroughly dry with paper towels to ensure proper roasting rather than steaming in the oven.
- Assemble The Ratatouille:
- Spread your sauce evenly across the bottom of the skillet. Arrange your vegetable slices in an overlapping circular pattern alternating between eggplant summer squash and tomato. Start from the outer edge and work your way toward the center for the most attractive presentation.
- Add Final Touches:
- Sprinkle the arranged vegetables with grated parmesan cheese additional salt and freshly ground black pepper. The cheese will create a delicious golden crust during baking.
- Bake To Perfection:
- Place your assembled ratatouille in the preheated oven and bake for approximately 45 minutes. You will know it is done when the vegetables are tender when pierced with a fork and the edges have begun to caramelize slightly.
- Garnish And Serve:
- Remove from oven and immediately sprinkle with fresh chopped basil which will release its aroma from the residual heat. Allow to rest for 5 minutes before serving.

My absolute favorite component of this dish is the contrasting textures between the silky sauce and the tender roasted vegetables. The first time I made this for my partner she declared it was fancy enough for company but comforting enough for a Tuesday night which perfectly captures its versatile appeal.

Make Ahead Options
This ratatouille actually improves in flavor when made a day ahead. Prepare through the baking stage then cool completely before refrigerating. Reheat covered in a 350°F oven for 15 to 20 minutes until warmed through. Add fresh basil just before serving for brightest flavor. I often make this on Sunday for easy weekday lunches when my schedule gets hectic.
Serving Suggestions
Serve this ratatouille alongside crusty bread for soaking up the flavorful sauce. For a heartier meal pair with creamy polenta or cooked farro. A simple green salad dressed with lemon vinaigrette makes the perfect accompaniment. When entertaining I sometimes add a poached egg on top of each serving which creates a luxurious sauce when the yolk breaks.
Storage Tips
Refrigerate leftovers in an airtight container for up to 4 days. The flavors actually continue to develop and improve over time. For longer storage freeze portions in freezer safe containers for up to 3 months. Thaw overnight in the refrigerator before reheating gently in the oven or microwave. Add a splash of water if it seems dry when reheating.
Variations To Try
For protein lovers add cooked Italian sausage or white beans to the sauce layer before arranging vegetables. Create a Greek inspired version by using oregano instead of basil and adding crumbled feta instead of parmesan. Make it spicier by doubling the crushed red pepper and adding a diced jalapeño to the sauce. The versatility of this recipe makes it perfect for seasonal adaptations.
Frequently Asked Questions
- → Can I make this dish vegan?
Yes, you can omit the parmesan cheese or use vegan parmesan as a substitute.
- → What type of tomatoes work best?
Vine-ripened, heirloom, or smaller ripe tomatoes are all excellent choices for their flavor and texture.
- → Is a cast iron skillet necessary?
A cast iron skillet works best for even cooking, but any oven-safe dish can be used.
- → Can I prepare this dish ahead of time?
Yes, you can prepare the sauce and slice the vegetables in advance. Assemble and bake before serving.
- → How do I store leftovers?
Store leftovers in an airtight container in the fridge for up to 3 days. Reheat in the oven or microwave.