In a large bowl, combine the ground beef or lamb with grated onion, garlic, plain yogurt, and tomato paste. Add salt, pepper, cumin, sweet paprika, oregano, and olive oil. Mix until well incorporated and sticky, about 3-5 minutes.

Divide the mixture into five equal portions. Roll each portion between two pieces of parchment paper into a thin rectangle, about 1/4-inch thick.

Peel off the top parchment layer and roll the meat tightly into a log, pinching the ends to seal.

Preheat oven to 200°C (400°F). Place the rolled kebabs seam side down on a parchment-lined tray and bake for 20-25 minutes until golden brown.

Let the kebabs rest for about 5 minutes before slicing thinly for serving.

Warm your pita or tortilla, stuff with kebab slices, and add toppings like lettuce, red onion, and pickles. Drizzle with sauce and enjoy!