Trim the tough ends of the stems
Rinse the broccoli rabe thoroughly in cold water
Shake off excess water or dry with a clean towel
Remove any yellowed or damaged leaves
Cut the bunch into smaller pieces if desired
Bring a large pot of salted water to a boil
Blanch the broccoli rabe for 1 to 3 minutes
Drain and transfer immediately to ice water if you want to stop the cooking
Drain well again before cooking further
Heat olive oil in a skillet over medium heat
Add garlic and red pepper flakes if desired
Add the broccoli rabe and sauté until tender
Season with salt and black pepper
Finish with lemon juice if desired
Serve warm as a side dish or use in pasta, sandwiches, or pizza