Wash and cut the broccoli into bite-sized florets, then set aside.
Heat the olive oil in a large skillet over medium heat until it gently shimmers and releases a fruity aroma.
Add the minced garlic to the skillet and sauté for about 30 seconds until fragrant and golden around the edges, stirring constantly to prevent burning.
Pour in a splash of water (about 2 tablespoons) and quickly cover with a lid to trap the steam. Let the broccoli steam for 3-4 minutes until bright green and crisp-tender.
Remove the lid, increase the heat slightly, and squeeze fresh lemon juice over the broccoli. Toss gently to coat evenly and allow the liquid to evaporate for about a minute.
Taste and season with salt and freshly ground pepper, adding chili flakes if you like a touch of heat. Give everything a final toss so the flavors meld beautifully.
Transfer the lemon garlic broccoli to a serving dish, drizzle with a little extra olive oil if desired, and serve immediately while vibrant and glistening.