Step 2
Place olive oil, garlic, ginger, curry paste, cilantro, cumin, turmeric, cayenne pepper, and cinnamon into the work bowl of a food processor, and process into a paste. Place the curry paste into a large mixing bowl, and stir with red onions, eggplant, celery, and red bell pepper to coat all the vegetables with curry mixture. Turn the vegetables into a large skillet over medium heat, and cook and stir until the vegetables are tender, about 7 minutes. Stir in the cooked lamb, and cook and stir until the lamb is hot and coated with spice mixture, 2 to 3 more minutes. Turn off the heat under the skillet.