Step 1

Preparation Preheat oven to 425°F. Coat a rimmed baking sheet with 1 Tbsp. oil. Mix garlic, salt, Aleppo-style pepper, and 3 Tbsp. oil in a large bowl. Add cabbage, onion, and squash and toss to coat. Spread out on prepared baking sheet (keep bowl handy) and roast until squash is browned underneath, 25–30 minutes.

Step 2

Toss pita, Halloumi, and remaining 1 Tbsp. oil in reserved bowl. Scatter over vegetables, then turn vegetables over with a large spatula. Roast until squash is fork-tender and cabbage, onion, pita, and Halloumi are browned in spots (cheese should be soft inside), 15–20 minutes. Remove from oven and drizzle with vinegar. Top with sumac and mint.

Step 3

Ingredient InfoHalloumi cheese can be found at Greek markets, natural and specialty foods stores, and some supermarkets. Sumac is available at Middle Eastern markets, specialty foods stores, and online.