Perfect with mashed potatoes.
Heat oil in large skillet over medium-high heat. Add onion, garlic, chilies and cumin and sauté until onion begins to soften, about 3 minutes. Sprinkle lamb with salt and pepper. Add to skillet and sauté until no longer pink, about 5 minutes. Add tomato sauce and broth. Bring to boil. Cover skillet, reduce heat to medium-low and simmer until lamb is tender, about 45 minutes. Season to taste with salt and pepper. Sprinkle with cilantro and serve.