Mix the marinade ingredients together with the steak, then refrigerate for at least 30 minutes for up to 12 hours.
After marinating, heat the oil in a large skillet over medium heat.
Add the shawarma mixture and cook, stirring occasionally for 5 minutes.
Add the sliced green pepper and mix to combine.
Cover and cook for 15 minutes.
Remove the cover and stir in
tomatoes. Cover and cook for 5 minutes.
Uncover and stir until all moisture
is almost gone.
Stir in the parsley and mix to combine for a couple of minutes.
Remove from heat and prepare the sandwiches by adding a layer of tahini sauce then scoop the shawarma into the sandwich.
Serve with more tahini sauce and tomato salad.