Preheat the oven to 400 degrees F.
In a food processor, combine the onions, garlic, and parsley until finely minced. Remove to a large bowl and add in the beef, tomato, garam masala, pine nuts, and lemon juice. Season with salt. Mix with your hands until well combined.
Arrange the pita quarters on a parchment-lined baking sheet. Fill each quarter with about 2 tablespoons of the meat mixture, flattening it out so the filling is even. Brush each quarter on both sides with a little olive oil. Sprinkle salt on top.
Bake for 20 minutes, turning once halfway through. Pitas should be browned and crispy.
Recipe courtesy Aarti Sequeira