Never knew cilantro (the leafy green stuff) could be cooked. How? Boiled? Sauteed?
Anyhow, you might try toasted coriander seeds (the end product of the cilantro plant) which can be cracked or ground. People who dislike the leafy herb find coriander seeds acceptable.
I haven't actually heard of coriander greens / cilantro being cooked as a vegetable. It's cooked as a seasoning. Though, often it is added as a seasoning at the end of the cooking or after the cooking, when it will still be basically raw when served. It's often an ingredient in Indian cooking and usually added early enough in the cooking process that it gets cooked and I don't find it offensive.
Coriander seeds would not work as a substitute. The flavour profile is far too different from the flavour profile of the greens. I really like coriander seeds, whether they are toasted or not. Those don't have to be cooked for me to enjoy.