01 - Bring a large pot of salted water to a boil. Add the green beans and blanch for 2 to 3 minutes until crisp-tender and bright green. Drain and immediately immerse in ice water to halt cooking. Drain thoroughly and set aside.
02 - Melt the butter in a large skillet over medium heat. Add the sliced shallots and sauté until softened and translucent, about 2 to 3 minutes.
03 - Incorporate the minced garlic into the skillet and cook while stirring constantly for 30 seconds until fragrant, ensuring it does not burn.
04 - Add the drained green beans to the skillet. Toss to evenly coat with the garlic butter and sauté for 3 to 4 minutes until warmed through and slightly caramelized.
05 - Season with sea salt and black pepper to taste. Optionally, drizzle with fresh lemon juice for brightness. Remove from heat.
06 - Transfer to a serving dish, garnish with chopped parsley if desired, and serve immediately.