It's hard to think of cooking broccoli rabe by any method other than sautéeing in olive oil (or blanching in boiling water, if you are so inclined). But, who wants to be doing that in 98 degree weather? Well, here's a summer solution you may not have thought of: grill it.
I recently came across a recipe for grilling broccoli rabe in Judy Rodgers' Zuni Cafe Cookbook. Rodgers, who also happens to be the genius mind behind grilled fava beans, suggests dressing the stalks as you would a salad, tossing the broccoli rabe with a tablespoon of water, a few tablespoons of olive oil, and salt. Next -- and this is crucial -- let it sit in the bowl for 5 to 10 minutes or so. This gives the salt a chance to do its work, slightly softening the otherwise tough greens. Then, it's onto the grill to cook on each side for roughly 1-1/2 minutes, charring and steaming until tender. It's delicious, and, better yet, there's no sauté pan to clean afterwards. N.B. This dress, salt, and wait method also works great for grilling radicchio and belgian endive, two favorites of mine.