Bring a large pot of salted water to a boil. Add in green beans and cook just until tender and bright green, about 3 minutes.
Place ice and water in a bowl. Use a slotted spoon to transfer the beans to the ice bath.
Drain and pat dry.
Melt butter in a skillet over medium heat. Once melted add in beans and dill. Toss to coat and season to taste with salt and pepper. Continue cooking until beans are tender, about 5 more minutes.