
Cut the beef into 2-inch chunks and toss with the cumin, coriander, paprika, minced garlic, olive oil, lemon juice, and 1 teaspoon salt.
Slice the onion into the slow cooker and add the beef on top. Cover and cook on LOW for 7 hours (or HIGH for 4).
Shred the beef in the juices. For crispy edges, spread it on a sheet pan and broil 4 minutes.
Warm the pitas, spread them with hummus, and fill with beef, chopped cucumber, and tomato.
Photo: DinnerDrop