Brown meat with onion, salt, garlic and cilantro. Add salsa, and 1/2 of the tomato sauce. Simmer for 15 minutes. Layer 6 tortilas into the bottom of a baking dish. Cover with half the meat mixture. Add half the cheese and half of the jalapeno. Cover with remaining tortillas, then meat, then cheese and jalapeno. Top with remaining tomato sauce. Bake at 350 degrees for 35 minutes. Serve.