Begin by placing the trimmed green beans in a large frying pan, spread out evenly. Add about 1 inch of water and bring to a boil over medium-high heat. Cook for 5 minutes until bright green and crisp-tender. Drain and set aside.

In the same frying pan, reduce heat to medium and add 3 tablespoons of salted butter. Let melt completely, then add minced garlic. Sauté gently for about 1-2 minutes until golden brown and aromatic.

Return the drained green beans to the pan, ensuring they're coated in garlic butter. Sprinkle in salt and pepper. Toss for 2-3 minutes until heated through and lightly caramelized.

Transfer to a serving plate while hot. Offer optional toppings like toasted almonds or red pepper flakes at the table.