Heat the olive oil in a large lidded skillet over medium heat.
Add the garlic and red pepper flakes and cook for 30 seconds, then add the broccolini and salt and toss.
Cook, tossing occasionally, for 2 minutes.
Add the water, cover, reduce the heat, and cook for 3 to 5 minutes, tossing occasionally, or until tender and bright green.
Remove from the heat, toss with the lemon juice, and season to taste.
