This vegetable tian is a delightful and colorful dish that showcases the natural flavors of fresh produce. Perfect for a light lunch or a side dish, it combines layers of zucchini, yellow squash, tomato, and red onion with aromatic garlic and thyme. The result is a visually stunning and deliciously healthy meal.
While most of the ingredients in this recipe are common, you might need to pay special attention to yellow squash. It's not as ubiquitous as zucchini or tomato, so make sure to check the produce section carefully. Fresh thyme can also be substituted with dried if you can't find it fresh.

Ingredients For Vegetable Tian (Layered Roasted Veggies)
Olive oil: Used for drizzling over the vegetables to enhance their flavor and aid in roasting.
Zucchini: Adds a mild, slightly sweet flavor and a tender texture to the dish.
Yellow squash: Similar to zucchini, it provides a subtle flavor and bright color contrast.
Tomato: Brings a juicy, slightly acidic element that balances the other vegetables.
Red onion: Adds a sweet and slightly sharp taste, complementing the other ingredients.
Garlic: Provides a robust, aromatic flavor that enhances the overall taste.
Salt: Essential for seasoning and bringing out the natural flavors of the vegetables.
Black pepper: Adds a hint of spice and depth to the dish.
Thyme: Offers a subtle earthy flavor that ties all the ingredients together.
Technique Tip for Layered Roasted Veggies
When slicing the zucchini, yellow squash, tomato, and red onion, aim for uniform thickness to ensure even cooking. Using a mandoline slicer can help achieve consistent slices, which will result in a more visually appealing and evenly cooked vegetable tian.
Suggested Side Dishes
Alternative Ingredients
olive oil - Substitute with avocado oil: Avocado oil has a similar smoke point and neutral flavor, making it a good alternative for roasting vegetables.
zucchini - Substitute with eggplant: Eggplant has a similar texture and can absorb flavors well, providing a different but complementary taste.
yellow squash - Substitute with butternut squash: Butternut squash offers a slightly sweeter flavor and a firmer texture, which can add a unique twist to the dish.
tomato - Substitute with bell pepper: Bell peppers provide a different but equally vibrant color and a sweet, slightly tangy flavor.
red onion - Substitute with shallots: Shallots have a milder and sweeter taste compared to red onions, which can add a subtle depth of flavor.
garlic - Substitute with shallot: Shallots can provide a similar aromatic quality and a slightly sweet flavor, though they are less pungent than garlic.
salt - Substitute with soy sauce: Soy sauce can add a savory umami flavor while also providing the necessary saltiness.
black pepper - Substitute with white pepper: White pepper has a similar heat but a slightly different flavor profile, which can add a unique twist to the dish.
thyme - Substitute with oregano: Oregano has a robust and slightly peppery flavor, which can complement the roasted vegetables well.
Other Alternative Recipes Similar to Layered Roasted Veggies
How to Store / Freeze Layered Roasted Veggies
Allow the Vegetable Tian to cool to room temperature before storing. This helps prevent condensation, which can make the vegetables soggy.
Transfer the cooled Vegetable Tian to an airtight container. If you don't have a container large enough, you can use a baking dish covered tightly with plastic wrap or aluminum foil.
Store the container in the refrigerator. The Vegetable Tian will keep well for up to 3-4 days.
For longer storage, consider freezing. Place the Vegetable Tian in a freezer-safe container or wrap it tightly with aluminum foil and then plastic wrap to prevent freezer burn.
Label the container with the date to keep track of its freshness. The Vegetable Tian can be frozen for up to 2 months.
When ready to reheat, if frozen, thaw the Vegetable Tian in the refrigerator overnight.
Preheat your oven to 350°F (175°C). Transfer the Vegetable Tian to an oven-safe dish if it's not already in one.
Cover the dish with foil to prevent the vegetables from drying out and bake for about 20-25 minutes, or until heated through.
For a crispier top, remove the foil during the last 5 minutes of reheating.
Alternatively, you can reheat individual portions in the microwave. Place a serving on a microwave-safe plate, cover with a microwave-safe lid or another plate, and heat on medium power for 2-3 minutes, or until warmed through.
How to Reheat Leftovers
- Preheat your oven to 350°F (175°C). Place the vegetable tian in an oven-safe dish, cover with foil, and bake for 15-20 minutes until heated through. This method helps retain the vegetables' texture and flavor.
- Use a microwave-safe dish to reheat the vegetable tian. Cover the dish with a microwave-safe lid or plastic wrap, leaving a small vent. Heat on medium power for 2-3 minutes, stirring halfway through to ensure even heating. Be cautious not to overcook, as this can make the vegetables mushy.
- For a quick stovetop method, place the vegetable tian in a non-stick skillet over medium heat. Add a splash of olive oil or a bit of vegetable broth to prevent sticking. Stir occasionally and heat for 5-7 minutes until warmed through.
- If you have an air fryer, set it to 350°F (175°C). Place the vegetable tian in the basket and heat for 5-7 minutes, shaking the basket halfway through. This method can help restore some of the vegetables' crispiness.
- For a toaster oven, preheat to 350°F (175°C). Place the vegetable tian on a baking sheet, cover with foil, and heat for 10-15 minutes until warmed through. This method is great for small portions and maintains the vegetables' texture.
Best Tools for Preparing Layered Roasted Veggies
Oven: Used to bake the vegetable tian at a consistent temperature of 375°F (190°C).
Baking dish: The vessel in which you will layer and bake the vegetables.
Knife: Essential for slicing the zucchini, yellow squash, tomato, and red onion thinly.
Cutting board: Provides a stable surface for slicing the vegetables.
Measuring spoons: Used to measure out the olive oil, salt, pepper, and thyme accurately.
Garlic press: Handy for mincing the garlic cloves quickly and efficiently.
Foil: Used to cover the baking dish during the initial baking period to help the vegetables cook evenly.
Basting brush: Useful for drizzling olive oil evenly over the vegetables.
Spatula: Helps in serving the vegetable tian neatly once it's done baking.
How to Save Time on Making Layered Roasted Veggies
Pre-slice vegetables: Slice the zucchini, yellow squash, tomato, and red onion in advance and store them in airtight containers.
Use a mandoline: A mandoline slicer ensures uniform slices quickly, saving you time and effort.
Pre-mince garlic: Mince the garlic ahead of time and store it in the fridge.
Batch seasoning: Mix the salt, pepper, and thyme together in a small bowl to sprinkle over the vegetables in one go.
Foil prep: Pre-cut the foil to cover the dish, so it's ready to use when needed.
Vegetable Tian (Layered Roasted Veggies)
Ingredients
Main Ingredients
- 2 tablespoon Olive Oil
- 1 medium Zucchini sliced thinly
- 1 medium Yellow Squash sliced thinly
- 1 medium Tomato sliced thinly
- 1 medium Red Onion sliced thinly
- 2 cloves Garlic minced
- 1 teaspoon Salt
- 1 teaspoon Black Pepper
- 1 teaspoon Thyme fresh or dried
Instructions
- Preheat your oven to 375°F (190°C).
- Drizzle 1 tablespoon of olive oil in the bottom of a baking dish.
- Layer the sliced zucchini, yellow squash, tomato, and red onion in the dish, alternating them.
- Sprinkle minced garlic, salt, pepper, and thyme over the vegetables.
- Drizzle the remaining olive oil over the top.
- Cover the dish with foil and bake for 30 minutes.
- Remove the foil and bake for an additional 10 minutes, or until the vegetables are tender and slightly browned.
- Serve hot and enjoy!
Nutritional Value
Keywords
Suggested Appetizers and Desserts for Layered Roasted Veggies
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