In a large bowl add the ground beef, olive oil, grate a white onion, add freshly chopped parsley and drop in the pre-measured seasonings that include Shawarma seasoning and all purpose seasoning. Mix everything together.
Lay down a large sheet of parchment paper, the size of your pan sheet. Place about 1/3 of the beef mixture on the sheet and cover it with another large parchment paper.
Next, roll out the beef between the sheets with a rolling pin until it's about 1/2inch in thickness. Remove the top paper.
Finally, fold the flattened beef until into smaller sections until all the meat is covered. Repeat this process until you have used up all the beef kebab mixture.
Slice up a few Roma tomatoes into smaller wedges, slice a red onion. Place them on a sheet pan along the parchment paper rolled up beef. Drizzle olive oil over the veggies and sprinkle with salt.
Preheat the oven to 400 degree F and place the pan sheet in the oven. This is a quick cook which should take about20 minutes.
Remove the pan sheet from the oven and turn on the boiler. Remove the baked beef kebabs from the parchment paper. Break up the meat into smaller pieces and spread them apart on the sheet pan. Place the pan sheet back in the oven for 5 minutes until you see the edges of the beef crisp up.
To make the garlic aioli, in a bowl add greek yogurt, mayo, minced garlic, garlic powder, salt and a splash of lemon juice. Mix the ingredients together and give it a taste test. Adjust flavor based on preference.
Warm up a pita and spread a generous layer of the homemade garlic aioli. Add multiple layers of the baked beef kebabs, some of the roasted tomatoes and onion and a few slices of the small kosher dill pickles. Top it all off with a sprinkle of the sumac seasoning. Enjoy!
Notes
For a leaner option, you can use ground chicken.Want more traditional flavors, use ground lamb.Love heat, make spicy Kebabs by adding cayenne or harissa.For a boost of freshness, add mint or dill.Instead of a Garlic Aioli, use Tzatziki sauce.