01 - Bring a large pot of salted water to a boil. Add green beans and cook for 2–3 minutes until just tender and bright green. Drain and immediately plunge into a bowl of ice water to stop cooking. Drain again and set aside.
02 - In a large skillet over medium heat, melt the butter. Add sliced almonds and toast, stirring frequently, until golden (about 2 minutes).
03 - Add minced garlic and cook for 30 seconds until fragrant.
04 - Add the drained green beans to the skillet. Toss to coat with butter, almonds, and garlic. Add the lemon zest and juice. Season with salt and pepper. Sauté for another 2–3 minutes, stirring, until beans are heated through and well coated.
05 - Serve immediately, garnished with extra toasted almonds if desired.