INGREDIENTS
2
6-inch pitas, split and quartered
1 lb
lean ground beef sirloin
1
red onion (1/2 grated, 1/2 sliced)
3 tbsp
extra-virgin olive oil, plus more for the grill
2 tbsp
harissa (chile paste)
Kosher salt and freshly ground pepper
Juice of 1/2 lemon
2
beefsteak or heirloom tomatoes (about 1 pound), cut into 1-inch wedges
2
Persian cucumbers, sliced 1/2 inch thick
1/3 cup
chopped fresh cilantro or mint (or a combination)
1
small heart romaine lettuce, torn
1/3 cup
crumbled feta cheese (about 2 ounces)