Thoroughly clean your greens then separate the stalks from the leafy part. Chop the stalks and the onion and saute in butter or coconut oil for a minute. Add in the garlic and salt and pepper as well as any other seasoning you like (crushed red pepper, granulated garlic, dried thyme, etc) and cook until just tender.
Meanwhile, roughly chop the leafy greens and add them once the stalks are slightly tender. Continue to stir and cook until the greens are wilted.
Then add frozen corn and lentils if desired. The corn adds a sweetness that balances the earthy flavor of the chard and the lentils add protein and make this dish more satisfying. Test for doneness and for flavor and top with Parmesan Cheese if desired. If only it ended up as pretty as it started!