Tahchin-e Sabzijat ba Ghalaf-e Ardeh Zorat (ته چین سبزیجات با غلاف آرد ذرت) — Persian-Style Layered Vegetable Bake with Toasted Corn Crust

• 30 mlGrapeseed oil (or extra-virgin olive oil)
• 200 gYellow onion (finely diced)
• 12 gGarlic (minced (about 4 cloves))
• 160 gCorn flour (fine corn flour (not cornstarch))
• 360 mlWater (hot, about 80°C/175°F)
• 6 gFine sea salt
• 2 gGround turmeric
• 1 gGround black pepper
• 15 mlExtra-virgin olive oil (for greasing the baking dish)
• 300 gZucchini (cut into 1 cm cubes)
• 300 gEggplant (cut into 1.5 cm cubes)
• 180 gRed bell pepper (cut into 1 cm pieces)
• 200 gGreen beans (trimmed, cut into 2 cm pieces)
• 700 gFresh tomatoes (coarsely grated on a box grater, skins discarded)
• 240 mlTomato sauce (plain, unsweetened)
• 90 gGreen onions (thinly sliced (white and green parts))
• 35 gCilantro (finely chopped, stems and leaves)
• 15 mlWhite wine vinegar (or apple cider vinegar)
• 180 gSour cream (full-fat for a velvety finish)
• 10 mlLemon juice (freshly squeezed)

Instructions

1. 1

   Heat the oven to 200°C/400°F (180°C/350°F fan). Set a 23×33 cm (9×13 in) baking dish aside. Prepare vegetables: cube zucchini and eggplant, chop pepper, and cut green beans. Keep sizes even so they roast at the same rate and the final layers slice cleanly.

2. 2

   Make the toasted corn crust base: warm 30 ml oil in a medium saucepan over medium heat. Add diced onion and cook 8–10 minutes, stirring, until soft and lightly golden. Add 12 g minced garlic and cook 45 seconds until fragrant, keeping heat moderate to avoid bitterness.

3. 3

   Stir in corn flour, salt, turmeric, and pepper. Toast 3–4 minutes, stirring constantly, until the mixture smells nutty and turns a deeper golden color. Slowly pour in 360 ml hot water while whisking to prevent lumps. Cook 2–3 minutes until thick like soft polenta.

4. 4

   Grease the baking dish with 15 ml olive oil. Spread the hot corn mixture into an even layer (about 1–1.5 cm thick). Smooth the top with a wet spatula. Bake 15 minutes at 200°C/400°F to set and start crisping the edges while you prepare the vegetables.

5. 5

   Toss zucchini, eggplant, bell pepper, and green beans with 20 ml oil, 5 g salt, and 1 g pepper. Spread on a large sheet pan in a single layer. Roast 18–22 minutes at 200°C/400°F, stirring once halfway, until tender with browned edges and reduced moisture.

6. 6

   Simmer the tomato-herb reduction while vegetables roast: combine grated tomatoes, tomato sauce, sliced green onions, chopped cilantro, grated garlic, vinegar, water, salt, and pepper in a wide skillet. Bring to a gentle boil, then simmer 18–22 minutes, stirring, until glossy and thick.

7. 7

   Assemble: remove the dish with the corn crust from the oven. Spread roasted vegetables evenly over the crust, pressing lightly so the layer is compact. Spoon the thick tomato-herb reduction over the vegetables in an even coat. Reduce oven to 190°C/375°F and bake 18–20 minutes.

8. 8

   Finish and serve: whisk sour cream with lemon juice and 1 g salt until smooth and pourable. Rest the bake 10 minutes so layers set. Slice into squares. Serve warm with sour cream drizzled on top (or on the side) to balance the tangy tomato and crisp corn base.