Homemade Doner Kebab

Steps

1. Preheat oven to 400°F (200°C).
2. Cut 5 sheets of parchment paper (16x12 inches) and set aside.
3. In a food processor, puree the onion and garlic.
4. Add ground beef, yogurt, and all spices (not the olive oil); pulse until the mixture is pale and forms a paste.
5. Transfer the meat mixture to a large bowl, drizzle in olive oil, and mix by hand until well combined.
6. Divide the mixture into 4 equal portions.
7. Oil one sheet of parchment paper and place another sheet on your work surface.
8. Spread one portion of the meat mixture onto the parchment, pressing lightly with oiled hands.
9. Cover with the oiled parchment sheet (oiled side down) and roll with a rolling pin until thin.
10. Remove the top parchment sheet, then roll up the meat mixture, keeping the bottom parchment attached.
11. Repeat with the remaining portions to form 4 meat rolls; place them on a baking sheet.
12. Place tomatoes and assorted peppers on the same tray, drizzle with olive oil, and season with salt and pepper.
13. Bake for 25-30 minutes until the meat rolls are cooked through.
14. Meanwhile, prepare the sumac salad: toss sliced red onion, parsley, sumac, salt, olive oil, and a squeeze of lemon juice together.
15. Remove the meat rolls from the oven, let rest briefly, then slice thinly.
16. Assemble sandwiches: spread hummus, tzatziki, and toum on flatbread, then top with sliced meat, roasted vegetables, and sumac onion salad.
17. Wrap and serve immediately.