Rapini, a bitter green, has a hint of broccoli's aroma with a suggestion of mustard's pungency. Somewhat similar to turnip greens, it's also known as broccoli rabe or raab, even though rapini isn't related to broccoli.
I usually blanch it briefly, much like spinach, before using it in anything I cook. The blanching process allows the color to stay reasonably intense, and also mellows the bitterness. Even sautéed rapini benefits from this, although I've been known to take a shortcut from time to time.
I sautéed some onions with garam masala and some garlic, ginger, coriander and cumin. I added paneer, which cooked for a minute or so, before adding the finely chopped rapini, and a touch of tomato puree (not essential, but I had a little too much... a fresh tomato might be nice), and then I covered and simmered the dish for just a few more minutes.
While it's fairly common to puree spinach in palak paneer, I chose to skip that step with my rapini version. The result might be a bit more creamy with the pureed version, but I like the texture of chopped rapini. Besides, not all versions of palak paneer involve making the greens unrecognizable...
With blanched rapini, the dish cooks quickly. Serve with daal for a complete meal...