Blend the onion in a food processor until it becomes a smooth paste
Add the minced beef, yogurt, olive oil, and all the spices to the onion and mix well in the food processor until everything comes together into a smooth, even texture
Cover with cling film and let it rest in the fridge for 1 hour to allow the flavours to soak into the meat
Place one-third of the mix onto a sheet of baking paper, cover with another sheet and roll it out thinly using a rolling pin
Remove the top sheet and roll the meat up tightly with the bottom sheet
Repeat until you have 3 rolls in total
Place the rolls on a baking tray and bake in a preheated oven at 190°C for 25–30 minutes
If any liquid gathers in the tray, carefully pour it out and bake for another 5 minutes to finish
