Gluten-Free Tian Provencal
By the Gluten Free Recipes team ·
This vibrant Tian Provencal showcases thinly sliced vegetables baked to tender perfection, infused with aromatic herbs and a bright lemon-garlic dressing. It's a beautiful and flavorful side dish that highlights the natural sweetness of summer produce.
At a glance: This easy salads and sides recipe yields 4 servings in about 30 minutes (10 min prep, 20 min cook). It uses 11 ingredients — including zucchini, yellow squash, tomatoes — and walks through 5 steps. Updated . Browse more salads and sides recipes or return to all gluten-free recipes.
Cross-Contamination Warning for Gluten-Free Tian Provencal: When preparing this salads and sides recipe, when purchasing ingredients like Dijon mustard, always check for a gluten-free certification to avoid cross-contamination. Be mindful of shared preparation surfaces and utensils if preparing for someone with celiac disease or severe gluten sensitivity In a shared kitchen, avoid porous materials — wooden spoons, wooden cutting boards, and scratched non-stick pans can harbor gluten proteins even after washing. Prefer glass, metal, or silicone tools.
Gluten-Free Notes for Gluten-Free Tian Provencal: This recipe is naturally gluten-free, relying on fresh vegetables and naturally GF seasonings. Always ensure your Dijon mustard is certified gluten-free.
Ingredients
- 1 lb zucchini, thinly sliced (about 1/8-inch thick)
- 1 lb yellow squash, thinly sliced (about 1/8-inch thick)
- 2 medium tomatoes, thinly sliced (about 1/8-inch thick)
- 1 medium red onion, thinly sliced
- 3 tbsp extra virgin olive oil
- 1 tbsp fresh lemon juice
- 1 tsp Dijon mustard (verify GF)
- 1 clove garlic, minced
- 0.5 tsp dried Herbes de Provence
- 0.5 tsp salt
- 0.25 tsp black pepper
Instructions
- 1
Preheat your oven to 375°F (190°C) and lightly grease a 9-inch pie dish or similar oven-safe baking dish. Arrange the thinly sliced zucchini, yellow squash, tomatoes, and red onion in an alternating pattern, overlapping them slightly, to create a visually appealing spiral or concentric circles across the bottom of the dish. This arrangement will allow the vegetables to cook evenly and become tender.
- 2
In a small bowl, whisk together the extra virgin olive oil, fresh lemon juice, gluten-free Dijon mustard, minced garlic, dried Herbes de Provence, salt, and black pepper until well combined. This creates a flavorful dressing that will infuse the vegetables as they bake.
- 3
Drizzle the prepared dressing evenly over the arranged vegetables in the baking dish, ensuring each slice is lightly coated. The olive oil will help the vegetables soften and caramelize, while the herbs and lemon will add a bright, aromatic finish.
- 4
Cover the baking dish tightly with aluminum foil and bake for 20 minutes, or until the vegetables are beginning to soften. Remove the foil and continue baking for another 10-15 minutes, or until the vegetables are tender and the edges are slightly golden and caramelized. The total cooking time should be around 30-35 minutes.
- 5
Allow the Tian Provencal to rest for a few minutes before serving. This allows the flavors to meld and the dish to set slightly. Serve warm as a delightful side dish alongside your favorite main courses.
Nutrition (per serving)
Tips & Notes
- If substituting olive oil for butter, use about 3/4 the amount (olive oil is 100% fat, butter is ~80%).
- Salt grated zucchini, let it sit 10 minutes, then wring dry for even better moisture control.
- Roll the lemon firmly on the counter before cutting to get significantly more juice.
Learn More
Celiac-safe recipe development and testing since 2026
Our team develops and tests every recipe to be 100% gluten-free, verifying ingredients, techniques, and cross-contamination risks. We focus on making gluten-free cooking as delicious and accessible as possible. Learn more about us.