Add 24 oz fresh trimmed green beans to a large frying pan. Fill the pan with 1" of water. Bring water to a boil and let green beans cook until they're soft when poked with a fork, about 5 minutes. Drain the water and move the beans to a strainer.
Add 3 Tbsp salted butter and 3 minced garlic cloves to the frying pan over medium heat. Cook until butter is melted.
Add back the drained green beans and sprinkle ½ tsp salt and ¼ tsp ground black pepper overtop. Toss everything together. Cook for 2-3 minutes, mixing and flipping once or twice until some of the pieces get crispy. Scoop onto a plate and serve.