Add some oil to a large skillet and place over a medium heat. Add onion powder, ground cardamom, ground turmeric, garam masala, cumin and (if desired) cayenne. Stir to mix and cook for a two minutes.

Add some canned tomato sauce and broth, and stir well to form a sauce. Add in a bag of frozen cauliflower florets, and turn to coat them in the sauce.

Continue cooking until the cauliflower is done to your liking. Add salt for seasoning.

Serve, garnished with chopped fresh cilantro and/or sliced green onions.